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The Manhatten Project was established in the U.S, as the U.S was trying to build the first nuclear bomb.
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The U.S dropped the Little Boy bomb onto the city of Hiroshima, completely devastating the city.
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The UN calls for the complete elimination of the production of nuclear weapons.
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The U.S discovered Soviet nuclear bombs in Cuba. The Soviet Union and the U.S almost enter war.
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Latin America declares itself to be free of nuclear weapons.
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The Treaty states that areas without nuclear weapons will not obtain them, an areas with nuclear weapons would disarm them.
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In New York Central Park, a million people gathered in the largest anti-nuclear weapons protest in history
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China, France, UK, Russia, and the US all sign. India refuses to sign.
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The International Campaign to Abolish Nuclear Weaponry is founded.