President Roosevelt, Soviet leader Joseph Stalin, and British prime minister Winston Churchill meet at the Yalta Conference to discuss postwar plans for Europe.
The U. S. Marines capture Iwo Jima and Okinawa.
President Roosevelt dies; Vice President Harry S. Truman succeeds him.
Twenty-one countries in North and South America sign the Act of Chapultepec, which expands the Monroe Doctrine’s unilateral guarantee against intervention in the Western Hemisphere into a mutual security system.
Berlin falls and Germany surrenders.
Truman, Stalin, and British prime minister Clement Attlee attend the Potsdam Conference; the Soviet Union agrees to declare war on Japan.
The United States, Great Britain, and the Soviet Union demand the unconditional surrender of Japan; Japan refuses.
The United States drops atomic bombs on Hiroshima and Nagasaki; Japan surrenders, ending World War II.
The United Nations is created; Eleanor Roosevelt is named U. S. delegate to the United Nations and becomes chairperson of the Committee on Human Rights.
President Truman’s Statement on Fundamentals of American Foreign Policy outlines a 12-point policy based on U. S. military strength as a means to preserve world peace.
W. E. B. DuBois helps write a constitution for the NAACP. The document is created in response to attacks against the organization’s conservative approach to civil rights reform.