The United States and the Soviet Union were at odds with each other in their visions for a postwar Europe due to fundamental ideological differences and competing geopolitical interests. The United States, as a capitalist democracy, sought to promote the spread of democracy and free-market capitalism throughout Europe, while the Soviet Union, as a communist state, sought to spread the communist ideology and establish satellite states throughout Eastern Europe.
One piece of evidence supporting this argument is the Marshall Plan, which was a U.S.-led initiative to rebuild Europe's economy after World War II. The plan aimed to provide economic assistance to Western European countries to help them recover from the war and prevent the spread of communism. The Soviet Union saw this plan as a threat to its own influence in the region and responded with its own economic and political initiatives.
Another piece of evidence is the division of Germany and Berlin. After the war, Germany was divided into four zones of occupation, with the United States, Britain, France, and the Soviet Union each controlling one zone. This division created tensions between the United States and the Soviet Union, as the Soviet Union sought to increase its influence in Germany by establishing a communist government in its zone. The Berlin blockade and airlift, in which the Soviet Union blockaded West Berlin in an attempt to force the United States to withdraw, further highlighted the tensions between the two superpowers.
A third piece of evidence is the formation of the North Atlantic Treaty Organization (NATO) in 1949. NATO was a military alliance formed by the United States, Canada, and several Western European countries to counter the Soviet Union's growing military power and influence in Europe. The formation of NATO further increased tensions between the United States and the Soviet Union and contributed to the arms race and Cold War.
In conclusion, the United States and the Soviet Union were at odds with each other in their visions for a postwar Europe due to their fundamental ideological differences and competing geopolitical interests. The Marshall Plan, the division of Germany and Berlin, and the formation of NATO are just a few examples of the many events that contributed to the tensions and conflicts between the two superpowers during the Cold War.