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The Molotov-Ribbentrop Pact was a non-aggression pact between Nazi Germany and the Soviet Union signed on August 23, 1939. It was named after the foreign ministers of the two countries, Vyacheslav Molotov and Joachim von Ribbentrop. The pact included a secret protocol that divided Eastern Europe into spheres of influence, with the Soviet Union gaining control of Finland, Estonia, Latvia, Lithuania, Poland, and Bessarabia.