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President Harry Truman as well as other 50 representatives from other countries sign the UN Charter in San Francisco.
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After North Korea put on a major attack against South Korea the UN Security Council made this attack into a security breach and made the UN Unified Command under the lead of the United States intervene in the situation.
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UN secretary U thant becomes famous after breaking the tension that revolved around the Cuban Missile Crisis. He intervened in between a dispute of President John F. Kennedy and Soviet General Secretary Nikita Khrushchev.
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The UN first meeting for the creation of the Environment Programme took place in Stockholm, Sweden. The decision was taken for the UNEP to be established it Nairobi.
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The UN's World Health Organization battled for 13 years against small pox and ended up winning saving about $1 billion dollars a year for vaccinations.
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The Comprehensive Test-Ban Treaty takes place in a conference which becomes a world changing subject since it moves all efforts towards nuclear disarmament and non-proliferation.
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After years of discussion, the UN finally lets the now independent South Sudan become the 193rd country to join the UN.
