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| 1945, Feb. 7–12 |
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| YALTA CONFERENCE (See Feb. 4–12). | 1 |
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| April 12 |
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| PRESIDENT ROOSEVELT DIED SUDDENLY at Warm Springs. Vice President Truman became president. | 2 |
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| May 18 |
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| President Truman informed the French ambassador that the U.S. would relinquish part of the American zone of occupation in Germany to the French. | 3 |
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| Aug. 6 |
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| The U.S. military dropped an atomic bomb on Hiroshima, Japan, on orders of President Truman. On Aug. 9, a second bomb dropped, on Nagasaki, Japan (See Aug. 9). The Japanese accepted terms on Aug. 14. | 4 |
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| Nov.–1946, March |
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| Large-scale strikes in several leading industries, after seriously curtailing production, led to a first round of wage increases. | 5 |
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| Dec. 4 |
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| The Senate approved U.S. participation in the United Nations. (See The United States, 1946–2000) | 6 |
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