British Empire: Overseas possessions of England and later the United Kingdom (1607–1997)

The British Empire included the dominions, colonies, protectorates, mandates, and other territories.

British Empire Scots: Breetish Empire Scottish Gaelic: Ìmpireachd Bhreatainn Irish: Impireacht na Breataine Welsh: Yr Ymerodraeth Brydeinig Cornish: Emperoureth Breten Veur
Union Flag or Union Jack Left: 1707–1801; Right: 1801–present
All areas of the world that were ever part of the British Empire. Current British Overseas Territories have their names underlined in red.
Demonym(s)	Briton, British

The Empire started with England's overseas possessions in the late 16th and early 17th centuries. It grew into the largest empire the world has ever known during the 19th and early 20th centuries.

The British Empire was the first of the European powers to ban slavery, and used the Royal Navy to suppress the Atlantic slave trade by the West Africa Squadron.

By 1922, more than 458 million people lived in the colonies and territory of the British Empire. This was more than one fifth of the world's population at that time. The Empire was larger than 33,700,000 km² (13,012,000 sq mi), almost a quarter of the Earth's total land area. The British Empire's large influence left a mark on many aspects of the modern world: constitutional, legal, linguistic, and cultural legacies. Called "the Empire on which the Sun never sets"' it stood as a sign of British strength and dominance across the globe.

The Age of Discovery saw Portugal and Spain carving vast empires. This sparked England to create its own colonies and trade networks. England, France, and the Netherlands sought to harvest wealth and resources in the Americas and Asia, with Britain eventually emerging as the dominate colonial power in North America and the Indian subcontinent.

In the 19th century, Britain's naval and imperial might surged to new heights, starting a period of prosperity and peace known as Pax Britannica. The combination of trade from factories (the industrial revolution) and shipping guarded by a navy, was the basis of wealth.

Controlling a significant portion of world trade, Britain wielded economic influence over regions such as Asia and Latin America. Some colonies earned greater autonomy, becoming Dominions.

While challenges emerged as the 20th century dawned, Britain's spirit endured. Even in the face of increased competition from Germany and the United States in the early 20th century, the Empire's legacy endured, shaping the course of world history.

World War I weakened the Empire, and World War II accelerated this decline. Also, the ideas of mechanization and manufacture were becoming well known. Other countries could do this, too. Labour costs in (for example) China were much lower than they were in Britain. It is possible that without WWII Britain would still have been in control of manufacturing in large parts of the world. But WWII did happen, and one consequence was the dominance of the United States and China.

Decolonization movements emerged in the post-war era, leading to the granting of independence to many territories, including India. Yet, the British Empire's influence endures, connecting former colonies and dominions in the Commonwealth of Nations, with many sharing the bond of a common monarch, now King Charles III.

When Britain gave Hong Kong back to China on 1 July 1997, it marked the effective end of the British Empire. Britain still has some overseas territories.

When the Thirteen Colonies became independent in the American War of Independence, the British Empire lost some of its oldest and most important colonies. But it kept colonies in what are now Canada and Florida, as well as the Caribbean. It still had colonies and businesses in Asia, Africa, and the Pacific too. After defeating Napoleonic France in 1815, Britain became the world's only superpower for more than a century. The Empire became even larger.

The Empire continued to expand during the 19th century. The Empire would force the Chinese to give them the island of Hong Kong after the Opium Wars during the middle of the 19th century. During the Scramble for Africa, Britain gained much of Africa, especially in the south.

By the start of the 20th century, the economies of Germany and the United States had begun catching up to Britain, especially in their industrialisation. Britain allowed Canada, Australia, New Zealand and South Africa to be "self-governing dominions" by the time of the First World War. They could create their own laws in most matters, and became independent countries in 1931.

The First World War weakened Europe. Though the British Empire had been the most powerful economy before the war, it was quickly surpassed by the United States as the greatest industrial power after the war. In the Second World War, Japan took the colonies of Britain and other European countries in South-East Asia. The allies eventually defeated Japan and took back their colonies, but Britain's prestige in Asia was damaged. This caused the Empire to decline more quickly.

The British Raj included the whole of the Indian subcontinent. The independence of the two states of India and Pakistan in 1947 was the first and most important step in decolonisation. In the following decade, Britain also gave independence to most of the territories of the British Empire. While doing this, the colonial government hid and destroyed many documents about the empire that they thought might get them in trouble. After the UK transferred Hong Kong back to China in 1997, the British Empire was essentially over. However, Britain still controls some overseas territories. After they were given independence, many countries which used to be British colonies joined the Commonwealth of Nations. Fifteen Commonwealth countries have the same head of state, King Charles III, and are Commonwealth realms.

The Slavery Abolition Act abolished slavery in the British Empire on 1 August 1834. In the territories administered by the East India Company and Ceylon, slavery was ended in 1844.

Parliamentary reform in 1832 saw the influence of the East India Company decline. Under the 1833 Act, slaves were granted full emancipation after a period of four to six years of "apprenticeship". Facing further opposition from abolitionists, the apprenticeship system was abolished in 1838.

The British government compensated slave-owners.