In what ways did World War II tie into the reason that the United States ended up in the Cold War?

WWII resulted in the development of nuclear weapons, often regarded as the primary cause of the Cold War

The release of two atomic bombs on Japan in August 1945 helped end World War II but ushered in the Cold War, a conflict between the United States and the Soviet Union that dragged on nearly half a century. ... Cold War calculations led to a divided Germany and U.S. involvement in wars in Korea and Vietnam.