What were the Tehran, Yalta, and Potsdam conferences?

• A. A set of meetings to decide postwar economic policy only.
• B. A sequence of diplomacy between Axis powers to end the war.
• C. A series of conferences focused on nuclear weapons development.
• D. Key Allied wartime conferences: Tehran planned the cross-Channel invasion; Yalta and Potsdam laid out postwar order and peace efforts, including Germany's division.

Answer: (D)