What was agreed upon at the Yalta Conference:
Declaration of Liberated Europe
The Declaration of Liberated Europe is a declaration that was created by Winston Churchill, Franklin D. Roosevelt, and Joseph Stalin during the Yalta Conference. It was a promise that allowed the people of Europe "to create democratic institutions of their own choice". The declaration pledged, "the earliest possible establishment through free elections governments responsive to the will of the people." This is similar to the statements of the Atlantic Charter, which says, "the right of all people to choose the form of government under which they will live." Stalin broke the pledge by encouraging Poland, Romania, Bulgaria, Hungary, and many more countries to construct a Communist government, instead of letting the people construct their own. The countries later became known as Stalin's Satellite Nations.
Here is an overview on what was decided upon at the end of the Yalta Conference.