Who were the big three who made most of the decisions about how World War 2 would end and what would happen afterward?

The "Big Three" who made crucial decisions about the end of World War II and its aftermath were Franklin D. Roosevelt, the President of the United States; Winston Churchill, the Prime Minister of the United Kingdom; and Joseph Stalin, the leader of the Soviet Union. Their leadership shaped key agreements at pivotal conferences, such as Yalta and Potsdam, where they discussed the post-war order, the division of Germany, and the establishment of the United Nations. Their negotiations and differing priorities reflected the complex dynamics of the wartime alliance and set the stage for the Cold War.