The Yalta conference ( February 4 - 11, 1945 ) was the World War II meeting of the leaders of the US, the UK and the Soviet Union. The three states were represented by Roosevelt, Churchill and Stalin. They were attempted to establish an agenda for governing the post-war Germany.There were 4 occupation zones: British zone, French zone, American zone and Soviet zone ( later the GDR ). Answer: At the Yalta conference Roosevelt, Churchill and Stalin agreed upon the occupied zones of Germany.