Slavery in the British Empire was always centered in the British West Indies. To a greater degree than in the Southern Thirteen Colonies, economic life in the West Indies depended upon Negro slavery, and the population of the islands soon became predominantly Negro. With the loss of the Thirteen Colonies after 1775, slavery within the British Empire became almost entirely confined to the Caribbean colonies. Until the emancipation of the slaves in 1833, British eyes were focused upon the West Indies whenever slavery was mentioned.