The Transvaal Boer republic was forcefully annexed by Britain in 1877, during Britain's attempt to consolidate the states of southern Africa under British rule. Long-standing Boer resentment turned into full-blown rebellion in the Transvaal and the first Anglo-Boer War, also known as the Boer Insurrection, broke out in 1880. The conflict ended almost as soon as it began with a decisive Boer victory at Battle of Majuba Hill (27 February 1881).