The British Empire was composed of the
dominions,
colonies,
protectorates,
mandates, and other
territories ruled or administered by the
United Kingdom and its predecessor states. It began with the
overseas possessions and
trading posts established by
England between the late 16th and early 18th centuries.
At its height it was the
largest empire in history and, for over a century, was the foremost global power. By 1913, the British Empire held sway over 412 million people, of the world population at the time, and by 1920, it covered , of the Earth's total land area. As a result, its
constitutional,
legal,
linguistic, and
cultural
Culture () is an umbrella term which encompasses the social behavior, institutions, and Social norm, norms found in human Society, societies, as well as the knowledge, beliefs, arts, laws, Social norm, customs, capabilities, and habits of the ...
legacy is widespread. At the peak of its power, it was described as "
the empire on which the sun never sets", as the Sun was always shining on at least one of its territories.
During the
Age of Discovery in the 15th and 16th centuries,
Portugal and
Spain pioneered European exploration of the globe, and in the process established large overseas empires. Envious of the great wealth these empires generated, England,
France, and the
Netherlands began to establish colonies and trade networks of their own in the
Americas
The Americas, which are sometimes collectively called America, are a landmass comprising the totality of North and South America. The Americas make up most of the land in Earth's Western Hemisphere and comprise the New World.
Along with th ...
and
Asia. A series of wars in the 17th and 18th centuries with the Netherlands and France left England (
Britain, following the
1707 Act of Union
The Acts of Union ( gd, Achd an Aonaidh) were two Acts of Parliament: the Union with Scotland Act 1706 passed by the Parliament of England, and the Union with England Act 1707 passed by the Parliament of Scotland. They put into effect the te ...
with Scotland) the dominant
colonial power in
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...
. Britain became the dominant power in the
Indian subcontinent after the
East India Company's
conquest of
Mughal Bengal at the
Battle of Plassey
The Battle of Plassey was a decisive victory of the British East India Company over the Nawab of Bengal and his French allies on 23 June 1757, under the leadership of Robert Clive. The victory was made possible by the defection of Mir Jafar, ...
in 1757.
The
American War of Independence
The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was a major war of the American Revolution. Widely considered as the war that secured the independence of t ...
resulted in Britain losing some of its oldest and most populous colonies in North America by 1783. British attention then turned towards Asia,
Africa, and the
Pacific. After the defeat of France in the
Napoleonic Wars (1803–1815), Britain emerged as the principal naval and imperial power of the 19th century and expanded its imperial holdings. The period of relative peace (1815–1914) during which the British Empire became the global
hegemon was later described as ("British Peace"). Alongside the formal control that Britain exerted over its colonies, its dominance of much of world trade meant that it effectively
controlled the economies of many regions, such as Asia and
Latin America.
[ Porter, p. 8.][ Marshall, pp. 156–57.] Increasing degrees of autonomy were granted to its white
settler colonies, some of which were reclassified as
Dominions.
By the start of the 20th century,
Germany and the
United States had begun to challenge Britain's economic lead. Military and economic tensions between Britain and Germany were major causes of the
First World War, during which Britain relied heavily on its empire. The conflict placed enormous strain on its military, financial, and manpower resources. Although the empire achieved its largest territorial extent immediately after the First World War, Britain was no longer the world's preeminent industrial or military power. In the
Second World War, Britain's colonies in
East Asia and
Southeast Asia were occupied by the
Empire of Japan. Despite the final victory of Britain and
its allies, the damage to British prestige helped accelerate the decline of the empire.
India, Britain's most valuable and populous possession, achieved
independence in 1947 as part of a larger
decolonisation movement, in which Britain granted independence to most territories of the empire. The
Suez Crisis
The Suez Crisis, or the Second Arab–Israeli war, also called the Tripartite Aggression ( ar, العدوان الثلاثي, Al-ʿUdwān aṯ-Ṯulāṯiyy) in the Arab world and the Sinai War in Israel,Also known as the Suez War or 1956 Wa ...
of 1956 confirmed Britain's decline as a global power, and the
transfer of Hong Kong to China on 1 July 1997 marked for many the end of the British Empire.
Fourteen
overseas territories
A territory is an area of land, sea, or space, particularly belonging or connected to a country, person, or animal.
In international politics, a territory is usually either the total area from which a state may extract power resources or an ...
remain under British sovereignty. After independence, many former British colonies, along with most of the dominions, joined the
Commonwealth of Nations, a free association of independent states. Fifteen of these, including the United Kingdom,
retain a common monarch, currently
King Charles III.
Origins (1497–1583)

The foundations of the British Empire were laid when
England and
Scotland were separate kingdoms. In 1496, King
Henry VII of England, following the successes of
Spain and
Portugal in overseas exploration, commissioned
John Cabot
John Cabot ( it, Giovanni Caboto ; 1450 – 1500) was an Italian navigator and explorer. His 1497 voyage to the coast of North America under the commission of Henry VII of England is the earliest-known European exploration of coastal North ...
to lead an expedition to discover a
northwest passage to Asia via the North Atlantic. Cabot sailed in 1497, five years after the
first voyage of Christopher Columbus, and made landfall on the coast of
Newfoundland
Newfoundland and Labrador (; french: Terre-Neuve-et-Labrador; frequently abbreviated as NL) is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region ...
. He believed he had reached Asia, and there was no attempt to found a colony. Cabot led another voyage to the Americas the following year but he did not return from this voyage and it is unknown what happened to his ships.
No further attempts to establish English colonies in the Americas were made until well into the
reign of Queen Elizabeth I, during the last decades of the 16th century. In the meantime,
Henry VIII
Henry VIII (28 June 149128 January 1547) was King of England from 22 April 1509 until his death in 1547. Henry is best known for his six marriages, and for his efforts to have his first marriage (to Catherine of Aragon) annulled. His disa ...
's 1533
Statute in Restraint of Appeals
The Ecclesiastical Appeals Act 1532 (24 Hen 8 c 12), also called the Statute in Restraint of Appeals, the Act of Appeals and The Act of Restraints in Appeals, was an Act of the Parliament of England.
It was passed in the first week of April 1533 ...
had declared "that this realm of England is an Empire". The
Protestant Reformation turned
England and
Catholic Spain into implacable enemies. In 1562, Elizabeth I encouraged the
privateers
John Hawkins and
Francis Drake
Sir Francis Drake ( – 28 January 1596) was an English explorer, sea captain, privateer, slave trader, naval officer, and politician. Drake is best known for his circumnavigation of the world in a single expedition, from 1577 to 1580 (t ...
to engage in
slave-raiding attacks against Spanish and Portuguese ships off the coast of
West Africa with the aim of establishing an
Atlantic slave trade
The Atlantic slave trade, transatlantic slave trade, or Euro-American slave trade involved the transportation by slave traders of enslaved African people, mainly to the Americas. The slave trade regularly used the triangular trade route and i ...
. This effort was rebuffed and later, as the
Anglo-Spanish Wars intensified,
Elizabeth I gave her blessing to further privateering raids against Spanish ports in the Americas and shipping that was returning across the Atlantic,
laden with treasure from the
New World. At the same time, influential writers such as
Richard Hakluyt
Richard Hakluyt (; 1553 – 23 November 1616) was an English writer. He is known for promoting the English colonization of North America through his works, notably ''Divers Voyages Touching the Discoverie of America'' (1582) and ''The Pri ...
and
John Dee
John Dee (13 July 1527 – 1608 or 1609) was an English mathematician, astronomer, astrologer, teacher, occultist, and alchemist. He was the court astronomer for, and advisor to, Elizabeth I, and spent much of his time on alchemy, divinatio ...
(who was the first to use the term "British Empire") were beginning to press for the establishment of England's own empire. By this time, Spain had become the dominant power in the Americas and was exploring the Pacific Ocean, Portugal had established trading posts and forts from the coasts of
Africa and
Brazil to
China
China, officially the People's Republic of China (PRC), is a country in East