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Project during World War II that produced the first nuclear weapons led by the United States. -
Operation Overlord began as thousands of soldiers landed on the beaches of Normandy. -
Harry S. Truman was succeeded to president of the United States in after President Roosevelt dies. -
Hitler commits suicide in a bunker under his headquarters in Berlin, Germany. -
The first target of an atomic bomb killing almost 130,000 people. -
Congress passes foreign aid bill to provide for European postwar recovery. -
the 22nd Amendment is ratified and limits the president to two terms in office. -
EBR-I is the first power plant to produce usable electricity through atomic fission. -
The first hydrogen bomb is detonated by the U.S. on Eniwetok, an atoll in the Marshall Islands -
Dwight Eisenhower is inaugurated as the 34th president of the United States -
Landmark Supreme Court decision that determined racial segregation in schools is unconstitutional.