From November 1884 to February 1885, 14 European powers + the United States met in Berlin at Chancellor Otto von Bismarck's invitation. The goal: impose order on the "Scramble for Africa" and prevent Great Power wars over African territory.
Overlapping claims + no rules = diplomatic crisis.
Claims required actual administration — treaties with chiefs, posts, police, customs. Paper claims insufficient. This accelerated military conquest.
Congo River + tributaries = free navigation/commerce for all signatories. Leopold got personal control (Congo Free State) but had to allow free trade.
Internationalized key waterways.
Suppression of slave trade (not slavery itself) — humanitarian fig leaf for imperial expansion.
New coastal claims must be notified to other signatories — "spheres of influence" formalized.
14 European: Germany, France, UK, Portugal, Belgium, Italy, Spain, Austria-Hungary, Russia, Denmark, Netherlands, Sweden-Norway, Ottoman Empire, USA (observer-ish, signed Act).
Zero Africans. No African ruler consulted.
Berlin didn't "draw the map" in detail—it set the rules of the game. The actual lines were negotiated in 30+ bilateral treaties (1885-1914). But Berlin legitimized the project.
It remains the defining moment of Africa's colonial dismemberment.