Which 1945 conference is credited with laying the groundwork for the United Nations and the postwar order?

• A. The Yalta Conference
• B. The San Francisco Conference
• C. The Potsdam Conference
• D. The Tehran Conference

Answer: (B)

The key idea is the creation of permanent international institutions to govern peace and security after World War II. The conference held in San Francisco in 1945 brought delegates from many nations to draft and sign the United Nations Charter. This charter formally established the United Nations and set up its structure—the main organs like the General Assembly and the Security Council—and outlined how member states would cooperate on security, diplomacy, and humanitarian issues. Those decisions created the framework for how countries would interact in the postwar world, making this conference the one that laid the foundation for the UN and the broader postwar order.

Other 1945 meetings dealt with wartime strategy and immediate postwar administration (for example, postwar plans for Germany or wartime alliance coordination), but they did not establish the UN in the way the San Francisco Charter did.