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The United States (among 25 other various countries) signed a united declaration against the Axis.
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The German troops who were in Bardia surrendered.
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The American-British-Dutch-Australian Command formed.
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The National War Labor Board was created.
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Some German U-boats began to harass shipping on the United States east coast.
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The Battle of Pasir Panjang contributed to the fall of Singapore.
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Germany suffered setbacks at Stalingrad and El Alamein.
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President Franklin Roosevelt ordered General Douglas MacArthur out of the Philippines.
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The helicopter made its 1st cross-country flight.
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American naval victory at Battle of Midway marked the turning point in Pacific War.
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Mass murder of Jewish people at Auschwitz began.
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The surrender at Stalingrad marked Germany's first major defeat.
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Allied victory in North Africa enabled invasion of Italy to be launched.
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Italy surrenders, but Germany took over the battle.
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British and Indian forces fought Japanese in Burma.
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Allies landed at Anzio and bombed a monastery at Monte Cassino
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Soviet offensive gathered pace in Eastern Europe.
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The Allied invasion of France. Paris is liberated in August.
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Guam liberated by the US Okinawa, and Iwo Jima bombed.
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Auschwitz liberated by Soviet troops.
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Russians reach Berlin: Hitler committed suicide and Germany surrendered on May 7th.
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Truman becomes President of the United States on Roosevelt's death, and Attlee replaces Churchill.
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After atomic bombs are dropped on Hiroshima and Nagasaki, Japan surrendered on August 14th.
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UN General Assembly met for 1st time in London.
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Winston Churchill's "Iron Curtain" speech drew attention to the division of Europe.
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The United States State Department released the Acheson-Lilienthal Report, outlining a plan for the international control of nuclear power.
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22 Nazi leaders were found guilty of war crimes at Nuremberg,
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Harry Truman issued a presidential proclamation declaring an official end to World War II.
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Communists seized power in Hungary.
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US Secretary of State George Marshall outlined the Marshall Plan to rebuild Western Europe.
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President Truman formulates "Truman Doctrine" of providing aid to countries whose governments are threatened with overthrow.
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Mahatma Gandhi assassinated in India.
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Communists seize power in Czechoslovakia.
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US Congress ratified the Marshall Plan, approving $17 billion in European aid.
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State of Israel was created and admitted over 200,000 European war refugees.
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President Harry Truman re-elected.
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President Harry Truman labeled his administration the "Fair Deal".
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North Atlantic Treaty Organization treaty signed.
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South Africa implemented apartheid.
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Moscow ended the blockade of West Berlin.
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Chinese Communist leaders proclaimed People's Republic of China.
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President Harry Truman publicly announced support for the development of a hydrogen bomb.
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North Korea invaded South Korea, beginning the Korean War
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UN troops began an assault intending to end Korean War by Christmas.
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Vietnam, Laos, and Cambodia became Independent states within the French Union.
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US, Australia, and New Zealand signed the ANZUS mutual defense treaty.
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Joseph Stalin proclaimed the Soviet Union had the atomic bomb.
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First underground atomic explosion at Frenchman Flat in Nevada.
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Big Bang theory proposed in Physical Review by Alpher, Bethe, and Gamow.
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The first thermonuclear weapon to utilize the H-bomb design of Edward Teller and Stanislaw Ulam, is detonated in the Marshall Islands.
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President Harry Truman announced American development of the hydrogen bomb.
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Francis Crick and James Watson discovered the chemical structure of DNA-molecule .
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Dr. Jonas Salk announced a vaccine to prevent polio.
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Edmund Hillary and Tenzing Norgay are first to reach the summit of Mount Everest.
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Fidel Castro led a failed attack on the Moncada Barracks.