Final answer:
At the Yalta Conference, a disagreement arose about Poland and Eastern European nations as Stalin wanted to create Soviet-friendly communist nations, while others pushed for democracies.
Step-by-step explanation:
True. At the Yalta Conference in February of 1945, a disagreement arose about Poland and other Eastern European nations. Stalin wanted to create a block of Soviet-friendly communist nations, while the United States and Britain pushed for self-government and democracies in Eastern Europe. This disagreement demonstrated the differing views of the American and Soviet leaders regarding the postwar governments and the political systems in Eastern Europe.