The Berlin Conference of 1884–1885 sought to destroy the competition between the powers by defining "effective occupation" as the criterion for international recognition of a territory claim, specifically in Africa. The imposition of direct rule in terms of "effective occupation" necessitated routine recourse to armed force against indigenous states and peoples. Uprisings against imperial rule were put down ruthlessly, most brutally in the Herero Wars in German South-West Africa from 1904 to 1907 and the Maji Maji Rebellion in German East Africa from 1905 to 1907. One of the goals of the conference was to reach agreements over trade, navigation, and boundaries of Central Africa. However, of all of the 15 nations in attendance of the Berlin Conference, none of the countries represented were African.