Some ways that the Soviets altered the map of Eastern Europe after WWII were:
The Soviets wanted a buffer with Germany and other western European nations and so they established the German Democratic Republic (East Germany) which led to the creation of two German nations.
The Soviets also established Communism in Eastern European nations such as Poland, Romania, Bulgaria, and Czechslovakia in an attempt to protect Communism from Democratic Europe.
Find out more on Soviet influence in Eastern Europe at https://brainly.com/question/13617277.
#SPJ1