This was a meeting where the division of Africa was decided.
A. Berlin Conference
B. Congress of Vienna
C. Brussels Conference
D. Congress of Versailles

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Berlin Conference of 1884–1885 Meeting at which the major European powers negotiated and formalized claims to territory in Africa; also called the Berlin West Africa Conference

b)

it created free trade throughout the colonial territories.

answer; i believe the correct answer is (the willamete valley);