The history of Denmark as a unified kingdom began in the 8th century, but historic documents describe the geographic area and the people living there—the Danes—as early as 500 AD. These early documents include the writings of Jordanes and Procopius. With the Christianization of the Danes c. 960 AD, it is clear that there existed a kingship speaking. Queen Margrethe II can trace her lineage back to the Viking kings Gorm the Old and Harald Bluetooth from this time, thus making the Monarchy of Denmark the oldest in Europe. The area now known as Denmark has a rich prehistory, having been populated by several prehistoric cultures and people for about 12,000 years, since the end of the last ice age.
Denmark's history has particularly been influenced by its geographical location between the North and Baltic seas, a strategically and economically important placement between Sweden and Germany, at the center of mutual struggles for control of the Baltic Sea (dominium maris baltici). Denmark was long in disputes with Sweden over control of Skånelandene and with Germany over control of Schleswig (a Danish fief) and Holstein (a German fief).
Eventually, Denmark lost these conflicts and ended up ceding first Skåneland to Sweden and later Schleswig-Holstein to the German Empire. After the eventual cession of Norway in 1814, Denmark retained control of the old Norwegian colonies of the Faroe Islands, Greenland and Iceland. During the 20th century, Iceland gained independence, Greenland and the Faroese became integral parts of the Kingdom of Denmark and North Schleswig reunited with Denmark in 1920 after a referendum. During World War II, Denmark was occupied by Nazi Germany, but was eventually liberated by British forces of the Allies in 1945, after which it joined the United Nations. In the aftermaths of World War II, and with the emergence of the subsequent Cold War, Denmark was quick to join the military alliance of NATO as a founding member in 1949.
The Scandinavian region has a rich prehistory, having been populated by several prehistoric cultures and people for about 12,000 years, since the end of the last ice age. During the ice age, all of Scandinavia was covered by glaciers most of the time, except for the southwestern parts of what we now know as Denmark. When the ice began retreating, the barren tundras were soon inhabited by reindeer and elk, and Ahrenburg and Swiderian hunters from the south followed them here to hunt occasionally. The geography then was very different from what we know today. Sea levels were much lower; the island of Great Britain was connected by a land bridge to mainland Europe and the large area between Great Britain and the Jutlandic peninsula - now beneath the North Sea and known as Doggerland - was inhabited by tribes of hunter-gatherers. As the climate warmed up, forceful rivers of meltwater started to flow and shape the virgin lands, and more stable flora and fauna gradually began emerging in Scandinavia, and Denmark in particular. The first human settlers to inhabit Denmark and Scandinavia permanently were the Maglemosian people, residing in seasonal camps and exploiting the land, sea, rivers and lakes. It was not until around 6,000 BC that the approximate geography of Denmark as we know it today had been shaped.
Denmark has some unique natural conditions for preservation of artifacts, providing a rich and diverse archeological record from which to understand the prehistoric cultures of this area.
The Weichsel glaciation covered all of Denmark most of the time, except the western coasts of Jutland. It ended around 13,000 years ago, allowing humans to move back into the previously ice-covered territories and establish permanent habitation. During the first post-glacial millennia, the landscape gradually changed from tundra to light forest, and varied fauna including now-extinct megafauna appeared. Early prehistoric cultures uncovered in modern Denmark include the Maglemosian Culture (9,500-6,000 BC); the Kongemose culture (6,000-5,200 BC), the Ertebølle culture (5,300-3,950 BC), and the Funnelbeaker culture (4,100-2,800 BC).
The first inhabitants of this early post-glacial landscape in the so-called Boreal period, were very small and scattered populations living from hunting of reindeer and other land mammals and gathering whatever fruits the climate was able to offer. Around 8,300 BC the temperature rose drastically, now with summer temperatures around 15 degrees Celsius, and the landscape changed into dense forests of aspen, birch and pine and the reindeer moved north, while aurochs and elk arrived from the south. The Koelbjerg Man is the oldest known bog body in the world and also the oldest set of human bones found in Denmark, dated to the time of the Maglemosian culture around 8,000 BC. With a continuing rise in temperature the oak, elm and hazel arrived in Denmark around 7,000 BC. Now boar, red deer, and roe deer also began to abound.
A burial from Bøgebakken at Vedbæk dates to c. 6,000 BC and contains 22 persons - including four newborns and one toddler. Eight of the 22 had died before reaching 20 years of age - testifying to the hardness of hunter-gatherer life in the cold north. Based on estimates of the amount of game animals, scholars estimate the population of Denmark to have been between 3,300-8,000 persons in the time around 7,000 BC. It is believed that the early hunter-gatherers lived nomadically, exploiting different environments at different times of the year, gradually shifting to the use of semi permanent base camps.
With the rising temperatures, sea levels also rose, and during the Atlantic period, Denmark evolved from a contiguous landmass around 11,000 BC to a series of islands by 4,500 BC. The inhabitants then shifted to a seafood based diet, which allowed the population to increase.
Agricultural settlers made inroads around 3,000 BC. Many dolmens and rock tombs (especially passage graves) date from this period. The Nordic Bronze Age period in Denmark, from about 1,500 BC, featured a culture which buried its dead, with their worldly goods, beneath burial mounds. The many finds of gold and bronze from this era include beautiful religious artifacts and musical instruments, and provide the earliest evidence of social classes and stratification.
During the Pre-Roman Iron Age (from the 4th to the 1st century BC), the climate in Denmark and southern Scandinavia became cooler and wetter, limiting agriculture and setting the stage for local groups to migrate southward into Germania. At around this time people began to extract iron from the ore in peat bogs. Evidence of strong Celtic cultural influence dates from this period in Denmark, and in much of northwest Europe, and survives in some of the older place names.
From the first to the fifth century the Roman Empire interacted with Jutland and the Danish isles in many ways, ranging from commerce to a possible "client state" relationship. This period is therefore referred to as the Roman Iron Age.
The Roman provinces, whose frontiers stopped short of Denmark, nevertheless maintained trade routes and relations with Danish or proto-Danish peoples, as attested by finds of Roman coins. The earliest known runic inscription dates back to c. 200 AD. Depletion of cultivated land in the last century BC seems to have contributed to increasing migrations in northern Europe and increasing conflict between Teutonic tribes and Roman settlements in Gaul. Roman artifacts are especially common in finds from the 1st century. It seems clear that some part of the Danish warrior aristocracy served in the Roman army.
Occasionally during this time, both animal and human sacrifice occurred and bodies were immersed in bogs. In recent times[update] some of these bog bodies have emerged very well-preserved, providing valuable information about the religion and people who lived in Denmark during this period. Some of the most well-preserved bog bodies from the Nordic Iron Age are the Tollund Man and the Grauballe Man.
The Dejbjerg wagon from the Pre-Roman Iron Age, thought to be a ceremonial wagon.
Copies of the Golden Horns of Gallehus from the Germanic Iron Age, thought to be ceremonial horns but of unknown purpose.
In his description of Scandza (from the 6th century work, Getica), the ancient writer Jordanes says that the Dani were of the same stock as the Suetidi (Swedes, Suithiod?) and expelled the Heruli and took their lands.
With the beginning of the Viking Age in the 9th century, the prehistoric period in Denmark ends. The Danish people were among those known as Vikings, during the 8th–11th centuries. Viking explorers first discovered and settled in Iceland in the 9th century, on their way from the Faroe Islands. From there, Greenland and Vinland (probably Newfoundland) were also settled. Utilizing their great skills in shipbuilding and navigation they raided and conquered parts of France and the British Isles and Ireland.
They also excelled in trading along the coasts and rivers of Europe, running trade routes from Greenland in the north to Constantinople in the south via Russian and Ukrainian rivers, most notably along the River Dnieper and via Kiev, then being the capital of Kiev Rus. The Danish Vikings were most active in Britain, Ireland, France, Spain, Portugal and Italy where they raided, conquered and settled (their earliest settlements included sites in the Danelaw, Ireland and Normandy). The Danelaw resulted when Alfred the Great was forced to cede half his kingdom to the Vikings, who then settled there for a time and engaged in peaceful trade, but attacks eventually resumed and the English kings had to pay tribute (Danegeld).
In the early 9th century, Charlemagne's Christian empire had expanded to the southern border of the Danes, and Frankish sources (e.g. Notker of St Gall) provide the earliest historical evidence of the Danes. These report a King Gudfred, who appeared in present-day Holstein with a navy in 804 where diplomacy took place with the Franks; In 808, King Gudfred attacked the Obotrites and conquered the city of Reric whose population was displaced or abducted to Hedeby. In 809, King Godfred and emissaries of Charlemagne failed to negotiate peace, despite the sister of Godfred being a concubine of Charlemagne, and the next year King Godfred attacked the Frisians with 200 ships.
Viking raids along the coast of France and the Netherlands were large-scale. Paris was besieged and the Loire Valley devastated during the 10th century. One group of Danes was granted permission to settle in northwestern France under the condition that they defend the place from future attacks. As a result, the region became known as "Normandy" and it was the descendants of these settlers who conquered England in 1066.
In addition, the Danes and Norwegians moved west into the Atlantic Ocean, settling on Iceland, Greenland, and the Shetland Isles. Brief Viking expeditions to North America around 1000 did not result in any settlements, and they were soon driven off by natives. Other Viking raids into Germany and the Mediterranean were short-lived and had no lasting effect.
The oldest parts of the defensive works of Danevirke near Hedeby at least date from the summer of 755 and were expanded with large works in the 10th century. The size and number of troops needed to man it indicates a quite powerful ruler in the area, which might be consistent with the kings of the Frankish sources. In 815 AD, Emperor Louis the Pious attacked Jutland apparently in support of a contender to the throne, perhaps Harald Klak, but was turned back by the sons of Godfred, who most likely were the sons of the above-mentioned Godfred. At the same time St. Ansgar travelled to Hedeby and started the Catholic Christianisation of Scandinavia.
Gorm the Old (Danish: Gorm den Gamle, Old Norse: Gormr gamli, Latin: Gormus Senex), also called Gorm the Languid (Danish: Gorm Løge, Gorm den Dvaske), was the first historically recognized ruler of Denmark, reigning from c. 936 to his death c. 958. He ruled from Jelling, and made the oldest of the Jelling Stones in honour of his wife Thyra. Gorm was born before 900 and died c. 958. His rule marks the start of the Danish monarchy and royal house (see Danish monarchs' family tree.
The Danes were united and officially Christianized in 965 AD by Gorm's son Harald Bluetooth (see below), the story of which is recorded on the Jelling stones. The extent of Harald's Danish Kingdom is unknown, although it is reasonable to believe that it stretched from the defensive line of Dannevirke, including the Viking city of Hedeby, across Jutland, the Danish isles and into southern present day Sweden; Scania and perhaps Halland and Blekinge. Furthermore, the Jelling stones attest that Harald had also "won" Norway.
In retaliation for the St. Brice's Day massacre of Danes in England, the son of Harald, Sweyn Forkbeard mounted a series of wars of conquest against England. By 1014, England had completely submitted to the Danes. However, distance and a lack of common interests prevented a lasting union, and Harald's son Cnut the Great barely maintained the link between the two countries, which completely broke up during the reign of his son Hardecanute. A final attempt by the Norwegians under Harald Hardrada to reconquer England failed, but did pave the way for William the Conqueror's takeover in 1066.
Following the death of Canute the Great, Denmark and England were left divided and despite some attempts (see below) were never reunited.
Canute thanked the Norwegians for their patience and then went from assembly to assembly (Danish:landsting) outlawing any sailor, captain or soldier who refused to pay a fine which amounted to more than a years harvest for most farmers. Canute and his housecarls fled south with a growing army of rebels on his heels. Canute fled to the royal property outside the town of Odense on Funen with his two brothers. After several attempts to break in and then bloody hand-to-hand fighting in the church, Benedict was cut down and Canute struck in the head by a large stone and then speared from the front. He died at the base of the main altar 10 July 1086, where he was buried by the Benedictines. When Queen Edele came to take Canute's body to Flanders, a light allegedly shone around the church and it was taken as a sign that Canute should remain where he was.
The death of St. Canute marks the end of the Viking Age. Never again would massive flotillas of Scandinavians meet each year to ravage the rest of Christian Europe.
The history of Christianity in Denmark overlaps with that of the Viking Age. Various petty kingdoms existed throughout the area now known as Denmark for many years. Between c. 960 and the early 980s, Harald Bluetooth appears to have established a kingdom in the lands of the Danes which stretched from Jutland to Skåne. Around the same time, he received a visit from a German missionary who, according to legend, survived an ordeal by fire, which convinced Harald to convert to Christianity.
The new religion, which replaced the old Norse religious practices, had many advantages for the king. Christianity brought with it some support from the Holy Roman Empire. It also allowed the king to dismiss many of his opponents who adhered to the old mythology. At this early stage there is no evidence that the Danish Church was able to create a stable administration that Harald could use to exercise more effective control over his kingdom, but it may have contributed to the development of a centralising political and religious ideology among the social elite which sustained and enhanced an increasingly powerful kingship.
England broke away from Danish control in 1035 and Denmark fell into disarray for some time. Sweyn Estridsen's son, Canute IV, raided England for the last time in 1085. He planned another invasion to take the throne of England from an aging William I. He called up a fleet of 1,000 Danish ships, 60 Norwegian long boats, with plans to meet with another 600 ships under Duke Robert of Flanders in the summer of 1086.
Canute, however, was beginning to realise that the imposition of the tithe on Danish peasants and nobles to fund the expansion of monasteries and churches and a new head tax (Danish:nefgjald) had brought his people to the verge of rebellion. Canute took weeks to arrive at Struer where the fleet had assembled, but he found only the Norwegians still there. Canute's nephew Sweyn Estridson (1020–74) re-established strong royal Danish authority and built a good relationship with Archbishop Adalbert of Hamburg-Bremen — at that time the Archbishop of all of Scandinavia.
In the early 12th century Denmark became the seat of an independent church province of Scandinavia. Not long after that, Sweden and Norway established their own archbishoprics, free of Danish control. The mid-12th century proved a difficult time for the kingdom of Denmark. Violent civil wars rocked the land. Eventually, Valdemar the Great (1131–82), gained control of the kingdom, stabilizing it and reorganizing the administration. King Valdemar and Absalon (ca 1128–1201), the bishop of Roskilde, rebuilt the country.
During Valdemar's reign construction began of a castle in the village of Havn, leading eventually to the foundation of Copenhagen, the modern capital of Denmark. Valdemar and Absalon built Denmark into a major power in the Baltic Sea, a power which later competed with the Hanseatic League, the counts of Holstein, and the Teutonic Knights for trade, territory, and influence throughout the Baltic. In 1168, Valdemar and Absalon gained a foothold on the southern shore of the Baltic, when they subdued the Principality of Rügen.
In the 1180s, Mecklenburg and the Duchy of Pomerania came under Danish control, too. In the new southern provinces, the Danes promoted Christianity (mission of the Rani, monasteries like Eldena Abbey) and settlement (Danish participation in the Ostsiedlung). The Danes lost most of their southern gains after the Battle of Bornhöved (1227), but the Rugian principality stayed with Denmark until 1325.
In 1202, Valdemar II became king and launched various "crusades" to claim territories, notably modern Estonia. Once these efforts were successful, a period in history known as the Danish Estonia began. Legend has it that the Danish flag, the Dannebrog fell from the sky during the Battle of Lyndanisse in Estonia in 1219. A series of Danish defeats culminating in the Battle of Bornhöved on 22 July 1227 cemented the loss of Denmark's north German territories. Valdemar himself was saved only by the courageous actions of a German knight who carried Valdemar to safety on his horse.
From that time on Valdemar focused his efforts on domestic affairs. One of the changes he instituted was the feudal system where he gave properties to men with the understanding that they owed him service. This increased the power of the noble families (Danish: højadelen) and gave rise to the lesser nobles (Danish: lavadelen) who controlled most of Denmark. Free peasants lost the traditional rights and privileges they had enjoyed since Viking times.
The king of Denmark had difficulty maintaining control of the kingdom in the face of opposition from the nobility and from the Church. An extended period of strained relations between the crown and the Popes of Rome took place, known as the "archiepiscopal conflicts".
By the late 13th century, royal power had waned, and the nobility forced the king to grant a charter, considered Denmark's first constitution. Following the Battle of Bornhöved in 1227, a weakened Denmark provided windows of opportunity to both the Hanseatic League and the Counts of Holstein. The Holstein Counts gained control of large portions of Denmark because the king would grant them fiefs in exchange for money to finance royal operations.
Valdemar spent the remainder of his life putting together a code of laws for Jutland, Zealand and Skåne. These codes were used as Denmark's legal code until 1683. This was a significant change from the local law making at the regional assemblies (Danish: landting) had been the long-standing tradition. Several methods of determining guilt or innocence were outlawed including trial by ordeal and trial by combat. The Code of Jutland (Danish: Jyske Lov) was approved at meeting of the nobility at Vordingborg in 1241 just prior to Valdemar's death. Because of his position as "the king of Dannebrog" and as a legislator, Valdemar enjoys a central position in Danish history. To posterity the civil wars and dissolution that followed his death made him appear to be the last king of a golden age.
The Middle Ages saw a period of close cooperation between the Crown and the Roman Catholic Church. Thousands of church buildings sprang up throughout the country during this time. The economy expanded during the 12th century, based mostly on the lucrative herring-trade, but the 13th century turned into a period of difficulty and saw the temporary collapse of royal authority.
During the disastrous reign of Christopher II (1319–1332), most of the country was seized by the provincial counts (except Skåne, which was taken over by Sweden) after numerous peasant revolts and conflicts with the Church. For eight years after Christopher's death, Denmark had no king, and was instead controlled by the counts. After one of them was assassinated in 1340, Christopher's son Valdemar was chosen as king, and gradually began to recover the territories, which was finally completed in 1360.
The Black Death, which came to Denmark during these years, also aided Valdemar's campaign. His continued efforts to expand the kingdom after 1360 brought him into open conflict with the Hanseatic League. He conquered Gotland, much to the displeasure of the League, which lost Visby, an important trading town located there.
The Hanseatic alliance with Sweden to attack Denmark initially proved a fiasco since Danish forces captured a large Hanseatic fleet, and ransomed it back for an enormous sum. Luckily for the League, the Jutland nobles revolted against the heavy taxes levied to fight the expansionist war in the Baltic; the two forces worked against the king, forcing him into exile in 1370. For several years, the Hanseatic League controlled the fortresses on "the sound" between Skåne and Zealand.
Margaret I, the daughter of Valdemar Atterdag, found herself married off to Håkon VI of Norway in an attempt to join the two kingdoms, along with Sweden, since Håkon had kinship ties to the Swedish royal family. The dynastic plans called for her son, Olaf II to rule the three kingdoms, but after his early death in 1387 she took on the role herself (1387–1412). During her lifetime (1353–1412) the three kingdoms of Denmark, Norway, and Sweden (including the Faroe Islands, as well as Iceland, Greenland, and present-day Finland) became linked under her capable rule, in what became known as the Kalmar Union, made official in 1397.
Her successor, Eric of Pomerania (King of Denmark from 1412 to 1439), lacked Margaret's skill and thus directly caused the breakup of the Kalmar Union. Eric's foreign policy engulfed Denmark in a succession of wars with the Holstein counts and the city of Lübeck. When the Hanseatic League imposed a trade embargo on Scandinavia, the Swedes (who saw their mining industry adversely affected) rose up in revolt. The three countries of the Kalmar Union all declared Eric deposed in 1439.
However, support for the idea of regionalism continued, so when Eric's nephew Christopher of Bavaria came to the throne in 1440, he managed to get himself elected in all three kingdoms, briefly reuniting Scandinavia (1442–1448). The Swedish nobility grew increasingly unhappy with Danish rule and the union soon became merely a legal concept with little practical application. During the subsequent reigns of Christian I (1450–1481) and Hans (1481–1513), tensions grew, and several wars between Sweden and Denmark erupted.
In the early 16th century, Christian II (reigned 1513–1523) came to power. He allegedly declared, "If the hat on my head knew what I was thinking, I would pull it off and throw it away." This quotation apparently refers to his devious and machiavellian political dealings. He conquered Sweden in an attempt to reinforce the union, and had about 100 leaders of the Swedish anti-unionist forces killed in what came to be known as the Stockholm Bloodbath of November 1520. The bloodbath destroyed any lingering hope of Scandinavian union.
In the aftermath of Sweden's definitive secession from the Kalmar Union in 1521, civil war and the Protestant Reformation followed in Denmark and Norway. When things settled down, the Privy Council of Denmark had lost some of its influence, and that of Norway no longer existed. The two kingdoms, known as Denmark–Norway, operated in a personal union under a single monarch. Norway kept its separate laws and some institutions, such as a royal chancellor, separate coinage and a separate army. As an hereditary kingdom, Norway's status as separate from Denmark remained important to the royal dynasty in its struggles to win elections as kings of Denmark. The two kingdoms remained tied until 1814.
The Reformation, which originated in the German lands in the early 16th century from the ideas of Martin Luther (1483–1546), had a considerable impact on Denmark. The Danish Reformation started in the mid-1520s. Some Danes wanted access to the Bible in their own language. In 1524 Hans Mikkelsen and Christiern Pedersen translated the New Testament into Danish; it became an instant best-seller.
Those who had traveled to Wittenberg in Saxony and come under the influence of the teachings of Luther and his associates included Hans Tausen, a Danish monk in the Order of St John Hospitallers. On Good Friday in 1525, Tausen used the pulpit at Antvorskov Abbey Church to proclaim Luther's reforms. His scandalized superiors ordered him out of Zealand and held him in the priory at Viborg under close confinement until he should come to his senses.
Townspeople came to see the troublesome monk, and Tausen preached to them from the window of his cell. Within days Tausen's ideas swept through the town. The then radical ideas of Luther found a receptive audience. Tausen's preaching converted ordinary people, merchants, nobles, and monks and even the Prior grew to appreciate Tausen and ordered his release. Tausen preached openly: much to the consternation of Bishop Jøn Friis, who lost his ability to do anything about the Lutherans and retreated to Hald Castle.
After preaching in the open air, Tausen gained the use of a small chapel, which soon proved too small for the crowds who attended services in Danish. His followers broke open a Franciscan Abbey so they could listen to Tausen, who packed the church daily for services. The town leaders protected Tausen from the Bishop of Viborg. Viborg became the center for the Danish Reformation for a time. Lutheranism spread quickly to Aarhus and Aalborg.
Within months King Frederick appointed Tausen as one of his personal chaplains (October 1526) in order to protect him from Catholics. Tausen's version of Luther's ideas spread throughout Denmark. Copenhagen became a hotbed of reformist activity and Tausen moved there to continue his work. His reputation preceded him and the excitement of hearing the liturgy in Danish brought thousands of people out to hear him. With the kings' permission, churches in Copenhagen opened their doors to the Lutherans and held services for Catholics and for Lutherans at different times of the day.
At Our Lady Church, the main church of Copenhagen, Bishop Ronnow refused to admit the "heretics". In December 1531 a mob stormed the Church of Our Lady in Copenhagen, encouraged by Copenhagen's fiery mayor, Ambrosius Bogbinder. They tore down statues and side-altars and destroyed artwork and reliquaries. Frederick I's policy of toleration insisted that the two competing groups share churches and pulpits peacefully, but this satisfied neither Lutherans nor Catholics.
Luther's ideas spread rapidly as a consequence of a powerful combination of popular enthusiasm for church reform and a royal eagerness to secure greater wealth through the seizure of church lands and property. In Denmark the reformation increased the crown's revenues by 300%.
Dissatisfaction with the established Catholic Church had already been widespread in Denmark. Many people viewed the tithes and fees — a constant source of irritation for farmers and merchants — as unjust. This became apparent once word got out that King Frederick and his son, Duke Christian had no sympathy with Franciscans who persistently made the rounds of the parishes to collect food, money, and clothing in addition to the tithes. Between 1527 and 1536 many towns petitioned the king to close the Franciscan houses.
Frederick obliged by sending letters authorizing the closure of the monasteries, often offering a small sum of money to help the brothers on their way. With the royal letter in hand, mobs forcibly closed Franciscan abbeys all over Denmark. They beat up monks, two of whom died. The closure of Franciscan houses occurred systematically in Copenhagen, Viborg, Aalborg, Randers, Malmö and ten other cities; in all, 28 monasteries or houses closed. People literally hounded Franciscan monks out of the towns.
No other order faced such harsh treatment. Considering how strongly many people felt about removing all traces of Catholic traditions from Danish churches, surprisingly little violence took place. Luther's teaching had become so overwhelmingly popular that Danes systematically cleared churches of statues, paintings, wall-hangings, reliquaries and other Catholic elements without interference. The only exceptions came in individual churches where the local churchmen refused to permit reform.
Frederick I died in 1533; the Viborg Assembly (Danish:landsting) proclaimed his son, Duke Christian of Schleswig, King Christian III. The State Council (Danish: Rigsråd) on Zealand, led by the Catholic bishops took control of the country and refused to recognize the election of Christian III, a staunch Lutheran. The regents feared Christian's zeal for Luther's ideas would tip the balance and disenfranchise Catholics — both peasants and nobles.
The State Council encouraged Count Christopher of Oldenburg to become Regent of Denmark. Christian III quickly raised an army to enforce his election, including mercenary troops from Germany. Count Christopher raised an army (including troops from Mecklenburg and Oldenburg and the Hanseatic League, especially Lűbeck) to restore his Catholic uncle King Christian II (deposed in 1523). This resulted in a three-year civil war called the Count's Feud (Danish: Grevens Fejde).
Armed rebellion by Catholic peasants led by Skipper Clement started in northern Jutland. Rebellion swept across Funen, Zealand and Skåne. Christian III's army soundly defeated an army of Catholic nobles at Svenstrup on 16 October 1534. Christian forced a truce with the Hanseatic League, which had sent troops to help Count Christopher. Christian III's army, under Johan Rantzau, chased the rebels all the way back to Aalborg and then massacred over two thousand of them inside the city in December 1534.
The Protestants captured Skipper Clement (1534), and later executed him in 1536. Christian III's mercenary troops put an end to Catholic hopes on Zealand and then Funen. Skåne rebels went as far as proclaiming Christian II king again. King Gustav Vasa of Sweden sent two separate armies to ravage Halland and Skåne into submission. Besiegers finally starved the last hold-outs in the rebellion, Copenhagen and Malmø, into surrender in July 1536. By the spring of 1536 Christian III had taken firm control.
Denmark became officially Lutheran on 30 October 1536 by decree of King Christian III, and in 1537 the reconstituted State Council approved the Lutheran Ordinances which was worked out by Danish theologians and Johannes Bugenhagen, based on the Augsburg Confession and Luther's Little Catechism. The government established the Danish National Church (Danish: Folkekirken) as the state church. All of Denmark's Catholic bishops went to prison until such time as they converted to Luther's reform. The authorities released them when they promised to marry and to support the reforms.
If they agreed, they received property and spent the rest of their lives as wealthy landowners. If they refused conversion, they died in prison. The State confiscated Church lands to pay for the armies that had enforced Christian III's election. Priests swore allegiance to Lutheranism or found new employment. The new owners turned monks out of their monasteries and abbeys. Nuns in a few places gained permission to live out their lives in nunneries, though without governmental financial support. The Crown closed churches, abbeys, priories and cathedrals, giving their property to local nobles or selling it.
The King appointed Danish superintendents (later bishops) to oversee Lutheran orthodoxy in the church. Denmark became part of a Lutheran heartland extending through Scandinavia and northern Germany. The Catholic Church everywhere in Scandinavia had sealed its fate by supporting hopeless causes: Christian II and the emperor Charles V in Denmark, Norwegian independence in that country, and in Sweden the Kalmar Union. Geographical distance also prevented them from receiving anything more than a sympathetic ear from Rome.
The 17th century saw a period of strict Lutheran orthodoxy in Denmark, with harsh punishments visited on suspected followers of either Calvinism or Huldrych Zwingli. Lutheran authorities treated Catholics harshly — in the fear that they might undermine the king, government, and national church. In a delayed result of the Reformation, Denmark became embroiled in the Thirty Years' War (1618–1648) on the Protestant side.
The Danog-Norwegian Kingdom grew wealthy during the 16th century, largely because of the increased traffic through the Øresund, which Danes could tax because Denmark controlled both sides of the Sound. The trade in grain exports from Poland to the Netherlands and to the rest of Europe grew enormously at this time, and the Danish kings did not hesitate to cash in on it. The Sound duty was only repealed in the 1840s.
The Danish economy benefited from the Eighty Years' War (1568–1648) in the Netherlands because a large number of skilled refugees from that area (the most economically advanced in Europe) came to Denmark. This helped to modernize many aspects of society and to establish trading links between Denmark and the Netherlands.
Denmark–Norway had a reputation as a relatively powerful kingdom at this time. European politics of the 16th century revolved largely around the struggle between Catholic and Protestant forces, so it seemed almost inevitable that Denmark, a strong, unified Lutheran kingdom, would get drawn into the larger war when it came. The Thirty Years' War went badly for the Protestant states in the early 1620s, and a call went out to Denmark–Norway to "save the Protestant cause".
King Christian IV, who was also a duke of the Holy Roman Empire on the basis of his possessions in Holstein, decided to intervene in the conflict raging in northern Germany. The campaign ended in defeat, and Jutland was occupied by the imperial army of Albrecht von Wallenstein. In the Treaty of Lübeck, Christian made peace and agreed to not intervene in Germany again. The war in Germany had been very expensive and Christian IV saw no other recourse than to raise the Sound tolls. Unfortunately, this act pushed the Netherlands away from Denmark and into the arms of Sweden.
In 1643, Sweden's armies, under the command of Lennart Torstensson, suddenly invaded Denmark without declaring war. The ensuing conflict became known as the Torstenson War. The Netherlands, wishing to end the Danish stranglehold on the Baltic, joined the Swedes in their war against Denmark–Norway. In October 1644 a combined Dutch-Swedish fleet destroyed 80 percent of the Danish fleet in the Battle of Femern. The result of this defeat proved disastrous for Denmark–Norway: in the Second treaty of Brömsebro (1645) Denmark ceded to Sweden the Norwegian provinces Jemtland, Herjedalen and Älvdalen as well as the Danish islands of Gotland and Øsel. Halland went to Sweden for a period of 30 years and the Netherlands were exempted from paying the Sound Duty.
Nevertheless, Danes remember Christian IV as one of the great kings of Denmark. He had a very long reign, from 1588 to 1648, and has become known as "the architect on the Danish throne" because of the large number of building projects he undertook. Many of the great buildings of Denmark date from his reign. After the death of Christian IV in 1648, his son Frederick succeeded him.
In 1657, during the Second Northern War, Denmark–Norway launched a war of revenge against Sweden (then distracted in Poland) which turned into a complete disaster. The war became a disaster for two reasons: Primarily, because Denmark's new powerful ally, the Netherlands, remained neutral as Denmark was the aggressor and Sweden the defender. Secondly, the Belts froze over in a rare occurrence during the winter of 1657-1658, allowing Charles X Gustav of Sweden to lead his armies across the ice to invade Zealand.
In the following Treaty of Roskilde, Denmark–Norway capitulated and gave up all of Eastern Denmark (Danish: Skåne, Halland, Blekinge and Bornholm), in addition to the counties of Bahusia (Norwegian: Båhuslen) and Trøndelag in Norway. Holstein-Gottorp was also tied to Sweden, providing a gateway for future invasions from the south.
But the Second Northern War was not yet over. Three months after the peace treaty was signed, Charles X Gustav of Sweden held a council of war where he decided to simply wipe Denmark from the map and unite all of Scandinavia under his rule. Once again the Swedish army arrived outside Copenhagen. However, this time the Danes did not panic or surrender. Instead, they decided to fight and prepared to defend Copenhagen.
Frederick III of Denmark had stayed in his capital and now encouraged the citizens of Copenhagen to resist the Swedes, by saying he would die in his nest. Furthermore, this unprovoked declaration of war by Sweden finally triggered the alliance that Denmark–Norway had with the Netherlands. A powerful Dutch fleet was sent to Copenhagen with vital supplies and reinforcements, which saved the city from being captured during the Swedish attack. Furthermore, Brandenburg-Prussia, the Polish–Lithuanian Commonwealth and the Habsburg monarchy had gathered large forces to aid Denmark–Norway and fighting continued into 1659.
Charles X Gustav of Sweden suddenly died of an illness in early 1660, while planning an invasion of Norway. Following his death, Sweden made peace in the Treaty of Copenhagen. The Swedes returned Trøndelag to Norway and Bornholm to Denmark, but kept both Bahusia and Terra Scania. The Netherlands and other European powers accepted the settlement, not wanting both coasts of the Sound controlled by Denmark. This treaty established the boundaries between Norway, Denmark, and Sweden that still exist today.
As a result of the disaster in the war against Sweden, King Frederick III (reigned 1648–1670) succeeded in convincing the nobles to give up some of their powers and their exemption from taxes, leading to the era of absolutism in Denmark. The country's main objective in the following decades was the recovery of its lost provinces from Sweden. In the 1670s Denmark–Norway had regained enough strength to start a war with Sweden to recover its lost provinces. However, in spite of Denmark's outside support, naval dominance and initial support from the population of the former eastern provinces, the war ended in a bitter stalemate.
A renewed attack during the Third Northern War (1700–1721) first resulted in the unfavourable Peace of Travendal, but after Denmark's re-entry into the war and Sweden's ultimate defeat by a large alliance, Sweden was no longer a threat to Denmark. However, the great powers opposed any Danish territorial gains, which meant the Treaty of Frederiksborg did not return the former eastern provinces to Denmark. Furthermore, Denmark was even forced to return Swedish Pomerania, held by Danish forces since 1715, to Sweden. Denmark now had no hope of recovering its lost provinces from Sweden. As noted earlier, the rest of Europe was simply against the Sound being controlled by a single nation ever again.
For most of the 18th century, Denmark was at peace. The only time when war threatened was in 1762, when the Duke of Holstein-Gottorp became Tsar Peter III of Russia and declared war on Denmark over his ancestral claims in Schleswig. Before any fighting could begin, however, he was overthrown by his wife, who took control of Russia as Tsarina Catherine II. Empress Catherine withdrew her husband's demands and negotiated the transfer of ducal Schleswig-Holstein to the Danish crown in return for Russian control of the County of Oldenburg and adjacent lands within the Holy Roman Empire, an exchange that was formalized with the 1773 Treaty of Tsarskoye Selo. The alliance that accompanied the territorial exchange tied Denmark's foreign policy to Russia's and led directly to Denmark's involvement in a series of wars over the succeeding decades.
With the suspension of the Danish diet, that body disappeared for a couple of centuries. During this time power became increasingly centralized in Copenhagen. Frederick's government reorganized itself in a much more hierarchical manner, built around the king as a focal point of administration. Crown officials dominated the administration, as well as a new group of bureaucrats, much to the dismay of the traditional aristocracy, who saw their own influence curtailed even further. The absolutist kings of Denmark were quite weak compared to their Swedish counterparts, and non-noble landlords became the real rulers of the country. They used their influence to pass laws that favored themselves.
The administration and laws underwent "modernization" during this period. In 1683 the Danske lov 1683 (Danish Code) standardized and collected all the old provincial laws. Other initiatives included the standardization of all weights and measures throughout the kingdom, and an agricultural survey and registry. This survey allowed the government to begin taxing landowners directly, moving it beyond dependence on revenue from crown lands.
The population of Denmark rose steadily through this period, from 600,000 in 1660 (after the loss of territory to Sweden) to 700,000 in 1720. By 1807 it had risen to 978,000.
Attempts to diversify the economy away from agriculture failed. During this period little industry existed, except for a very small amount in Copenhagen (population: 30,000). In the late 17th century a small amount of industry did develop, catering to the military. Denmark suffered in part because of its lack of natural resources. It had nothing much to export except agricultural products. The Netherlands bought the largest share of Denmark's exports. The landlords, only about 300 in number, nevertheless owned 90% of the land in the country.
Rural administration remained primarily the preserve of the large landholders and of a few law-enforcement officials. In 1733, low crop prices caused the introduction of adscription, an effort by the landlords to obtain cheap labor. The effect of this was to turn the previously free Danish peasantry into serfs. The adscription system tied rural laborers to their place of birth and required them to rent farms on the estates.
As rent, peasants were required to work the landlords' plots and could not negotiate contracts or demand payment for improvements made to the farm. Peasants who refused to rent a farm were subject to six years of military service. Danish agriculture was very inefficient and unproductive as a result, since the peasants had no motivation to perform anything more than the absolute minimum of work. Attempts to sell Danish grain in Norway failed because of its low quality compared to grain from the Baltic.
In the late 18th century, extensive agricultural reforms took place, involving the abolition of the old open-field system and the amalgamation of many smaller farms into larger ones. With the abolition of the adscription system, the military could now only obtain manpower through conscription. These reforms were possible because agricultural prices steadily rose in the second half of the century.
Throughout the 18th century the Danish economy did very well, largely on the basis of expanded agricultural output to meet growing demand across Europe. Danish merchant ships also traded around Europe and the North Atlantic, venturing to new Danish colonies in the Caribbean and North Atlantic.
New propriety and Enlightenment ideas became popular among the middle classes of Denmark, arousing increased interest in personal liberty. In the last 15 years of the 18th century the authorities relaxed the censorship which had existed since the beginning of the 17th century. At the same time, a sense of Danish nationalism began to develop. Hostility increased against Germans and Norwegians present at the royal court. Pride in the Danish language and culture increased, and eventually a law banned "foreigners" from holding posts in the government. Antagonism between Germans and Danes increased from the mid-18th century on.
In the 1770s, during the reign of the mentally unstable Christian VII (1766–1808), the queen's lover, a German doctor named Johann Friedrich Struensee, became the real ruler of the country. Filled with the ideas of the Enlightenment, he attempted a number of radical reforms including freedom of the press and religion. But it was short-lived. The landlords feared that the reforms were a threat to their power, while the commoners believed that religious freedom was an invitation to atheism.
In 1772, Struensee was arrested, tried, and convicted of crimes against the majesty, his right hand was cut off following his beheading, his remains were quartered and put on display on top of spikes on the commons west of Copenhagen. The next 12 years were a period of unmitigated reaction until a group of reformers gained power in 1784.
Denmark became the model of enlightened despotism, partially influenced by the ideas of the French Revolution. Denmark thus adopted liberalizing reforms in line with those of the French Revolution, with no direct contact. Danes were aware of French ideas and agreed with them, as it moved from Danish absolutism to a liberal constitutional system between 1750-1850. The change of government in 1784 was caused by a power vacuum created when King Christian VII took ill, and influence shifted to the crown prince (who later became King Frederick VI) and reform-oriented landowners. Between 1784 and 1815, the abolition of serfdom made the majority of the peasants into landowners. The government also introduced free trade and universal education. In contrast to France under the ancien regime, agricultural reform was intensified in Denmark, civil rights were extended to the peasants, the finances of the Danish state were healthy, and there were no external or internal crises. That is, reform was gradual and the regime itself carried out agrarian reforms that had the effect of weakening absolutism by creating a class of independent peasant freeholders. Much of the initiative came from well-organized liberals who directed political change in the first half of the 19th century.
Danish news media first appeared in the 1540s, when handwritten fly sheets reported on the news. In 1666, Anders Bording, the father of Danish journalism, began a state paper. The royal privilege to bring out a newspaper was issued to Joachim Wielandt in 1720. University officials handled the censorship, but in 1770 Denmark became one of the first nations of the world to provide for press freedom; it ended in 1799. The press in 1795-1814, led by intellectuals and civil servants, called out for a more just and modern society, and spoke out for the oppressed tenant farmers against the power of the old aristocracy.
In 1834, the first liberal newspaper appeared, one that gave much more emphasis to actual news content rather than opinions. The newspapers championed the Revolution of 1848 in Denmark. The new constitution of 1849 liberated the Danish press. Newspapers flourished in the second half of the 19th century, usually tied to one or another political party or labor union. Modernization, bringing in new features and mechanical techniques, appeared after 1900. The total circulation was 500,000 daily in 1901, more than doubling to 1.2 million in 1925. The German occupation brought informal censorship; some offending newspaper buildings were simply blown up by the Nazis. During the war, the underground produced 550 newspapers—small, surreptitiously printed sheets that encouraged sabotage and resistance.
Denmark maintained a number of colonies outside Scandinavia, starting in the 17th century and lasting until the 20th century. Denmark also controlled traditional colonies in Greenland and Iceland in the north Atlantic, obtained through the union with Norway. Christian IV (reigned 1588–1648) first initiated the policy of expanding Denmark's overseas trade, as part of the mercantilist trend then popular in European governing circles. Denmark established its own first colony at Tranquebar, or Trankebar, on India's south coast, in 1620.
In the Caribbean Denmark started a colony on St Thomas in 1671, St John in 1718, and purchased Saint Croix from France in 1733. Denmark maintained its Indian colony, Tranquebar, as well as several other smaller colonies there, for about two hundred years. The Danish East India Company operated out of Tranquebar.
During its heyday, the Danish East Indian Company and the Swedish East India Company imported more tea than the British East India Company — and smuggled 90% of it into Britain, where it sold at a huge profit. Both of the Scandinavia-based East India Companies folded during the course of the Napoleonic Wars. Denmark also maintained other colonies, forts, and bases in West Africa, primarily for the purpose of slave-trading.
The long decades of peace came to an abrupt end during the Napoleonic Wars. Britain felt threatened by the Armed Neutrality Treaty of 1794, which originally involved Denmark and Sweden, and later Prussia and Russia. The British fleet attacked Copenhagen in 1801, destroying much of Denmark's navy. Denmark nonetheless managed to remain largely uninvolved in the Napoleonic Wars until 1807. The British fleet bombarded Copenhagen again that year, causing considerable destruction to the city. They then captured the entire Danish fleet so that it could not be used by France to invade Britain (as the French had lost their own fleet at Trafalgar in 1805), leading to the Gunboat War (1807–1814). The confiscation of the Danish navy was widely criticised in Britain.
In 1809 Danish forces fighting on the French side participated in defeating the anti-Bonapartist German rebellion led by Ferdinand von Schill, at the Battle of Stralsund. By 1813, Denmark could no longer bear the war costs, and the state was bankrupt. When in the same year the Sixth Coalition isolated Denmark by clearing Northern Germany of French forces, Frederick VI had to make peace. Accordingly, the unfavourable Treaty of Kiel was concluded in January 1814 with Sweden and Great Britain, and another peace was signed with Russia in February.
The post-Napoleonic Congress of Vienna demanded the dissolution of the Dano-Norwegian union, and this was confirmed by the Treaty of Kiel in 1814. The treaty transferred Heligoland to Great Britain and Norway from the Danish to the Swedish crown, Denmark was to be satisfied with Swedish Pomerania. But the Norwegians revolted, declared their independence, and elected crown-prince Christian Frederick (the future Christian VIII) as their king. However, the Norwegian independence movement failed to attract any support from the European powers. After a brief war with Sweden, Christian had to abdicate in order to preserve Norwegian autonomy, established in a personal union with Sweden. In favour of the Kingdom of Prussia, Denmark renounced her claims to Swedish Pomerania at the Congress of Vienna (1815), and instead was satisfied with the Duchy of Lauenburg and a Prussian payment of 3.5 million talers. Prussia also took over a Danish 600,000-taler debt to Sweden.
Interestingly, this period also counts as "the Golden Age" of Danish intellectual history. A sign of renewed intellectual vigor was the introduction of compulsory schooling in 1814. Literature, painting, sculpture, and philosophy all experienced an unusually vibrant period. The stories of Hans Christian Andersen (1805–1875) became popular not only in Denmark, but all over Europe and in the United States. The ideas of the philosopher Søren Kierkegaard (1813–1855) spread far beyond Denmark, influencing not only his own era, but proving instrumental in the development of new philosophical systems after him. The sculptures of Thorvaldsen (1770–1834) grace public buildings all over Denmark and other artists appreciated and copied his style. Grundtvig (1783–1872) tried to reinvigorate the Danish National Church and contributed to the hymns used by the church in Denmark.
The Danish liberal and national movements gained momentum in the 1830s, and after the European revolutions of 1848 Denmark became a constitutional monarchy on 5 June 1849. The growing bourgeoisie had demanded a share in government, and in an attempt to avert the sort of bloody revolution occurring elsewhere in Europe, Frederick VII gave in to the demands of the citizens. A new constitution emerged, separating the powers and granting the franchise to all adult males, as well as freedom of the press, religion, and association. The king became head of the executive branch. The legislative branch consisted of two parliamentary chambers; the Folketing, comprising members elected by the general population, and the Landsting, elected by landowners. Denmark also gained an independent judiciary.
Another significant result of the revolution was the abolition of slavery in the Danish West Indies, the Danish colony in the Caribbean, which at an earlier part of its history witnessed the biggest slave auctions in the world. In 1845 Denmark's other tropical colony, Tranquebar in India, was sold to Britain.
The islands and Jutland together constituted the kingdom, whereas the monarch held the duchies in personal union with the kingdom. The duchy of Schleswig constituted a Danish fief, while the Duchy of Holstein remained a part of the German Confederation.
Since the early 18th century, and even more so from the early 19th century, the Danes had become used to viewing the duchies and the kingdom as increasingly unified in one state. This view, however, clashed with that of the German majority in the duchies, also enthused by liberal and national trends, which lead to a movement known as Schleswig-Holsteinism. Schleswig-Holsteinists aimed for independence from Denmark. The First Schleswig War (1848–1851) broke out after constitutional change in 1849 and ended with the status quo because of the intervention of Britain and other Great Powers.
Much debate took place in Denmark as to how to deal with the question of Schleswig-Holstein. National-Liberals demanded permanent ties between Schleswig and Denmark, but stated that Holstein could do as it pleased. However, international events overtook domestic Danish politics, and Denmark faced war against both Prussia and Austria in what became known as the Second Schleswig War (1864). The war lasted from February to October 1864. Denmark was easily beaten by Prussia and Austria, and obliged to relinquish both Schleswig and Holstein.
The war caused Denmark as a nation severe trauma, forcing it to reconsider its place in the world. The loss of Schleswig-Holstein came as the latest in the long series of defeats and territorial loss that had begun in the 17th century. The Danish state had now lost some of the richest areas of the kingdom: Skåne to Sweden and Schleswig to Germany, so the nation focused on developing the poorer areas of the country. Extensive agricultural improvements took place in Jutland, and a new form of nationalism, which emphasized the "small" people, the decency of rural Denmark, and the shunning of wider aspirations, developed.
Industrialisation came to Denmark in the second half of the 19th century. The nation's first railroads were constructed in the 1850s, and improved communications and overseas trade allowed industry to develop in spite of Denmark's lack of natural resources. Trade unions developed starting in the 1870s. There was a considerable migration of people from the countryside to the cities, and Danish agriculture became centered around the export of dairy and meat products.
The two concepts of internationalism and nationalism have become very much part of the history of the Danish Labour movement.
The Labour movement gathered momentum when social issues became associated with internationalism. Socialist theory and organisational contact with the First International, which linked labour movements in various countries, paved the way. Louis Pio emerged as the driving force. In 1871, following the bloody defeat of the Paris Commune, he started publishing socialist journalism. He campaigned strongly for an independent organisation of the workers under their own management, and organised a Danish branch of the First International. This became the foundation stone for the Social Democratic Party under the name of Den Internationale Arbejderforening for Danmark (The International Labour Association for Denmark). As a combination of union and political party, it adroitly brought together national and international elements.
Pio saw internationalism as vital for the success of the workers' struggle: without internationalism, no progress. He pointed out that the middle classes cooperated across national frontiers and used nationalistic rhetoric as a weapon against the workers and their liberation.
The Danish section started organising strikes and demonstrations for higher wages and social reforms. Moderate demands, but enough to provoke the employers and the forces of law and order. Things came to a head in the Battle of Fælleden on 5 May 1872. The authorities arrested the three leaders, Louis Pio, Poul Geleff and Harald Brix, charged them and convicted them of high treason. The three left Denmark for the United States to set up the ill-starred and short-lived socialist colony near Hays City, in Ellis County, Kansas.
Back in Denmark, the emerging political situation made possible by the new Danish door of independence alarmed many of the existing elites, since it inevitably empowered the peasantry. Simple men with little education replaced professors and professionals in positions of power. The peasants, in coalition with liberal and radical elements from the cities, eventually won a majority of seats in the Folketing. Even though constitutional changes had taken place to boost the power of the Landsting, the Left Venstre Party demanded to form the government, but the king, still the head of the executive branch, refused. However, in 1901, king Christian IX gave in and asked Johan Henrik Deuntzer, a member of Venstre, to form a government, the Cabinet of Deuntzer. This began a tradition of parliamentary government, and with the exception of the Easter Crisis of 1920, no government since 1901 has ruled against a parliamentary majority in the Folketing.
The Scandinavian Monetary Union, a monetary union formed by Sweden and Denmark on 5 May 1873, fixed both their currencies against gold at par to each other. Norway, governed in union with Sweden, entered the monetary union two years later in 1875 by pegging its currency to gold at the same level as Denmark and Sweden (.403 gram). The monetary union proved one of the few tangible results of the Scandinavist political movement of the 19th century.
The union provided fixed exchange-rates and stability in monetary terms, but the member-countries continued to issue their own separate currencies. In an outcome not initially foreseen, the perceived security led to a situation where the formally separate currencies circulated on a basis of "as good as" the legal tender virtually throughout the entire area.
The outbreak of World War I in 1914 brought an end to the monetary union. Sweden abandoned the tie to gold on 2 August 1914, and without a fixed exchange rate the free circulation came to an end.
In the early decades of the 20th century the new Radical Party and the older Venstre Party shared government. During this time women gained the right to vote (1915), and the United States purchased some of Denmark's colonial holdings: the three islands of St. John, St. Croix, and St. Thomas in the West Indies. The period also saw Denmark inaugurating important social and labour-market reforms, laying the basis for the present[update] welfare state.
Denmark remained neutral during World War I (entry into the war on either side would have been suicidal), but the conflict affected the country to a considerable extent. As its economy was heavily based on exports, the unrestricted German submarine warfare was a serious problem. Denmark had no choice but to sell many of its exports to Germany instead of overseas nations. Widespread profiteering took place, but commerce also suffered great disruption because of the conflict and because of the ensuing financial instability in Europe. Rationing was instituted, and there were food and fuel shortages. In addition, Denmark was forced by Berlin to mine the Sound to prevent British ships from entering it. Following the defeat of Germany in the war (1918), the Treaty of Versailles (1919) mandated the Schleswig Plebiscites, which resulted in the return of Northern Schleswig (now[update] South Jutland) to Denmark. The king and parts of the opposition grumbled that Prime Minister Carl Theodor Zahle (in office 1909–1910 and 1913–1920) did not use Germany's defeat to take back a bigger portion of the province, which Denmark had lost in the Second Schleswig War in 1864. The king and the opposition wanted to take over the city of Flensburg, while the cabinet insisted on only claiming areas where a majority of Danes lived, which led to a plebiscite in the affected areas over whether they wanted to become a part of Denmark or remain within Germany. Believing that he had the support of the people, King Christian X used his reserve power to dismiss Zahle's cabinet, sparking the Easter Crisis of 1920. As a result of the Easter Crisis, the king promised to no longer interfere in politics. Although the Danish Constitution was not amended at that time, Danish monarchs have stayed out of politics since then. The end of the war also prompted the Danish government to finish negotiating with Iceland, resulting in Iceland becoming a sovereign Kingdom on 1 December 1918 while retaining the Danish monarch as head of state.
In the 1924 Folketing election the Social Democrats, under the charismatic Thorvald Stauning, became Denmark's largest parliamentary political party, a position they maintained until 2001. Since the opposition still held a majority of the seats in the Landsting, Stauning had to co-operate with some of the right-wing parties, making the Social Democrats a more mainstream party. He succeeded in brokering an important deal in the 1930s which brought an end to the Great Depression in Denmark, and also laid the foundation for a welfare state.
Denmark joined the League of Nations in 1920 and during the interwar period was active in promoting peaceful solutions to international issues. With the rise of Adolf Hitler in Germany during the 1930s, the country found itself in a very precarious situation. Berlin refused to recognize its post-1920 border with Denmark, however the Nazi regime was preoccupied with more important matters and did not make any issue of it. The Danes tried unsuccessfully to obtain recognition of the border from their neighbor, but otherwise went out of their way to avoid antagonizing Germany.
In 1939, Hitler offered nonaggression pacts to the Scandinavian nations. While Sweden and Norway refused, Denmark readily accepted. With the beginning of WWII that fall, Copenhagen declared its neutrality. Nevertheless, Germany (so as to secure communications for its invasion of Norway) occupied Denmark on April 9, 1940, meeting limited resistance. British forces, however, occupied the Faroe Islands (12 April 1940) and invaded Iceland (10 May 1940) in pre-emptive moves to prevent German occupation. Following a plebiscite, Iceland declared its independence on June 17, 1944 and became a republic, dissolving its union with Denmark.
The Nazi occupation of Denmark unfolded in a unique manner. The Monarchy remained. The conditions of occupation started off very leniently (although the authorities banned Danmarks Kommunistiske Parti (the Communist party) when the Wehrmacht invaded the Soviet Union in June 1941), and Denmark retained its own government. The new coalition government tried to protect the population from Nazi rule through compromise. The Germans allowed the Folketing to remain in session, the police remained under Danish control, and the German authorities stayed one step removed from the population. However, the Nazi demands eventually became intolerable for the Danish government, so, in 1943, it resigned and Germany assumed full control of Denmark. From that point, an armed resistance movement grew against the occupying forces. Towards the end of the war, Denmark grew increasingly difficult for Germany to control, but the country remained under occupation until near the end of the war. On 4 May 1945, German forces in Denmark, North West Germany, and the Netherlands surrendered to the Allies. On 5 May 1945, British troops liberated Copenhagen. Three days later, the war ended.
Denmark succeeded in smuggling most of its Jewish population to Sweden, in 1943, when the Nazis threatened deportation; see Rescue of the Danish Jews. Danish doctors refused to treat German citizens fleeing from Germany, which resulted in the deaths of 13,000 people.
In 1948 Denmark granted home rule to the Faroe Islands. 1953 saw further political reform in Denmark, abolishing the Landsting (the elected upper house), colonial status for Greenland and allowing female rights of succession to the throne with the signing of a new constitution.
After the war, Denmark became a founding charter-member of the United Nations in 1945. With the Soviet occupation of Bornholm, the emergence of what evolved to become the Cold War and with the lessons of World War II still fresh in Danish minds, the country abandoned its former policy of neutrality and became one of the original founding members of the North Atlantic Treaty Organisation (NATO) in 1949. Denmark had originally tried to form an alliance with Norway and Sweden only, but this attempt had failed. A Nordic Council later emerged however, with the aim of co-ordinating Nordic policies. Later on, in a referendum in 1972, Danes voted in favour of joining the European Community, the predecessor of the European Union, and Denmark became a member on 1 January 1973. Since then, Denmark has proven a hesitant member of the European community, opting out of many proposals, including the Euro, which the country rejected in a referendum in 2000. In 2001, the Folketing agreed to enter the war in Afghanistan. A total of 43 Danish soldiers were killed in Afghanistan since the first deployment in 2002.
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