What was the result of the Yalta Conference?
At the Yalta Conference, the major Allied powers (Great Britain, United States and Soviet Union) met to discuss what the world (and especially Europe) would look like after the war was over.
One of the things that was agreed was that Poland would not return to its prewar borders. Instead, the Soviet Union would keep the part of Poland that had been given to it in its treaty with Germany before the war started. Poland as a whole was to be in the USSR's sphere of influence.
Germany was to be divided into four parts. Each part would be run by one of the Allied powers (the three powers at the Yalta Conference and France). Berlin was also to be divided even though it was inside the Soviet zone.
The Yalta Conference refers to a meeting of heads of governments of USA, Great Britain, and Soviet Union from February 4 to 11, 1945 at Yalta to discuss the problems of post-war Europe. Among the various agreement reached at this conference one was related to the position of Poland. As per this agreement it was agreed to cede a part of Poland territory to Russia. Also it was agreed to extend support to Soviet Russia backed government there and hold free elections in Poland.
Also during this conference it was agreed to divide Germany in four zones to be occupied by Great Britain, France, USA and Russia.