Which 1884–1885 conference formalized European rules for claiming African territory?

The Berlin Conference of 1884–1885 formalized rules that European powers used while claiming territory in Africa.

The conference met in Berlin from 15 November 1884 to 26 February 1885, hosted by German Chancellor Otto von Bismarck. Fourteen states attended, including European powers and the United States. No African government was represented in the negotiations, even though the decisions concerned African lands and peoples.

The resulting General Act addressed trade, navigation, and diplomatic procedures, including the principle of “effective occupation,” under which a European power needed to demonstrate control to support a territorial claim. The conference did not itself draw every later colonial boundary or directly divide the entire continent, but it accelerated and regulated the competition commonly called the Scramble for Africa. Its consequences included imposed borders, conquest, and colonial rule.