The Diet of Augsburg were the meetings of the Imperial Diet of the

Holy Roman Empire The Holy Roman Empire was a Polity, political entity in Western Europe, Western, Central Europe, Central, and Southern Europe that developed during the Early Middle Ages and continued until its Dissolution of the Holy Roman Empire, dissolution i ...

held in the German city of

Augsburg Augsburg (; bar , Augschburg , links=https://en.wikipedia.org/wiki/Swabian_German , label=Swabian German, , ) is a city in Swabia, Bavaria, Germany, around west of Bavarian capital Munich. It is a university town and regional seat of the ' ...

. Both an

Imperial City In the Holy Roman Empire, the collective term free and imperial cities (german: Freie und Reichsstädte), briefly worded free imperial city (', la, urbs imperialis libera), was used from the fifteenth century to denote a self-ruling city that ...

and the residence of the Augsburg prince-bishops, the town had hosted the Estates in many such sessions since the 10th century. In 1282, the diet of Augsburg assigned the control of

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

to the

House of Habsburg The House of Habsburg (), alternatively spelled Hapsburg in Englishgerman: Haus Habsburg, ; es, Casa de Habsburgo; hu, Habsburg család, it, Casa di Asburgo, nl, Huis van Habsburg, pl, dom Habsburgów, pt, Casa de Habsburgo, la, Domus Hab ...

. In the 16th century, twelve of thirty-five imperial diets were held in Augsburg, a result of the close financial relationship between the Augsburg-based banking families such as the Fugger and the reigning

Habsburg The House of Habsburg (), alternatively spelled Hapsburg in Englishgerman: Haus Habsburg, ; es, Casa de Habsburgo; hu, Habsburg család, it, Casa di Asburgo, nl, Huis van Habsburg, pl, dom Habsburgów, pt, Casa de Habsburgo, la, Domus Hab ...

emperors, particularly Maximilian I and his grandson

Charles V Charles V may refer to: * Charles V, Holy Roman Emperor (1500–1558) * Charles V of Naples (1661–1700), better known as Charles II of Spain * Charles V of France (1338–1380), called the Wise * Charles V, Duke of Lorraine (1643–1690) * Infan ...

. Nevertheless, the meetings of 1518, 1530, 1547/48 and 1555, during the

Reformation The Reformation (alternatively named the Protestant Reformation or the European Reformation) was a major movement within Western Christianity in 16th-century Europe that posed a religious and political challenge to the Catholic Church and in ...

and the ensuing

religious war A religious war or a war of religion, sometimes also known as a holy war ( la, sanctum bellum), is a war which is primarily caused or justified by differences in religion. In the modern period, there are frequent debates over the extent to wh ...

between the Catholic emperor and the Protestant

Schmalkaldic League The Schmalkaldic League (; ; or ) was a military alliance of Lutheran princes within the Holy Roman Empire during the mid-16th century. Although created for religious motives soon after the start of the Reformation, its members later came to ...

, are especially noteworthy. With the Peace of Augsburg, the principle let each prince decide the religion of his subjects and inhabitants who could not conform could leave.

The Diet of 1518

An Imperial Diet took place at Augsburg from July to October 1518, during the reign of Maximilian I, who died a few months later. He tried, among other things, to appoint his grandson Charles as King of Romans, in order to guarantee his accession to the throne, but he failed. (His only son

Philip Philip, also Phillip, is a male given name, derived from the Greek (''Philippos'', lit. "horse-loving" or "fond of horses"), from a compound of (''philos'', "dear", "loved", "loving") and (''hippos'', "horse"). Prominent Philips who popularize ...

had died in 1506.) The Elector Frederick persuaded the pope

Leo X Pope Leo X ( it, Leone X; born Giovanni di Lorenzo de' Medici, 11 December 14751 December 1521) was head of the Catholic Church and ruler of the Papal States from 9 March 1513 to his death in December 1521. Born into the prominent political an ...

to have

Luther Luther may refer to: People * Martin Luther (1483–1546), German monk credited with initiating the Protestant Reformation * Martin Luther King Jr. (1929-1968), American minister and leader in the American civil rights movement * Luther (give ...

examined at Augsburg, instead of being called to Rome, where the Imperial Diet was held. Between 12 and 14 October 1518 Luther defended himself under questioning by

papal legate 300px, A woodcut showing Henry II of England greeting the pope's legate. A papal legate or apostolic legate (from the ancient Roman title ''legatus'') is a personal representative of the pope to foreign nations, or to some part of the Catholic ...

Cardinal Cajetan Thomas Cajetan (; 20 February 14699 August 1534), also known as Gaetanus, commonly Tommaso de Vio or Thomas de Vio, was an Italian philosopher, theologian, cardinal (from 1517 until his death) and the Master of the Order of Preachers 1508 to 151 ...

. The pope's right to issue indulgences was at the centre of the dispute between the two men. The hearings degenerated into a shouting match. More than writing his theses, Luther's confrontation with the church cast him as an enemy of the pope: «"His Holiness abuses Scripture", retorted Luther. "I deny that he is above Scripture"». Cajetan's original instructions had been to arrest Luther if he failed to recant, but the legate desisted from doing so. With help from the Carmelite monk Christoph Langenmantel, Luther slipped out of the city at night, unbeknownst to Cajetan.

Proceedings

Emperor Charles V could not bring himself to openly discuss the matters of religious dispute and cause for division throughout Europe so he often stayed away from the sessions of the Diet. Instead he sent his younger brother Ferdinand I to have authority over discussions. The Diet was organized into three separate colleges:

Prince-elector The prince-electors (german: Kurfürst pl. , cz, Kurfiřt, la, Princeps Elector), or electors for short, were the members of the electoral college that elected the emperor of the Holy Roman Empire. From the 13th century onwards, the prince ...

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