The United States and Russia signed the Moscow Treaty, agreeing to limit their nuclear arsenals.
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A nuclear bomb was lost off the coast of Georgia, US.
The first private research atomic reactor opened in Chicago, Illinois, US.
President Truman announced to the people of America that they successfully developed a hydrogen bomb.
Nearly one million people protested for the disarmament of nuclear weapons in Central Park, New York City.
The US tested the TX-17 thermonuclear bomb for the first time in Bikini Atoll of the Marshall Islands.
