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1939 ww2 started when germany invaded poland -
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Japan attacked United States, Pearl harbor -
Usa drops the Atomic bomb on japan -
ww2 ended -
the establishment of the United Nations, the beginning of the Cold War, and significant social and political changes in various parts of the world -
the Truman Doctrine, the start of the Marshall Plan, and the independence of India and Pakistan -
the Arab-Israeli War, the Berlin Blockade, the declaration of the State of Israel, and the Berlin Airlift -
the formation of the North Atlantic Treaty Organization (NATO), the establishment of the People's Republic of China, and the first Soviet atomic bomb test