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first production Model T
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This was a secret diplomatic communication issued from the German Foreign Office on January 17, 1917,
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Armistice of Compiegne
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It was passed on June 4, 1919 but ratified on August 18, 1920 which gave women the right to vote
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the first solo, nonstop transatlantic flight
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start of the Wall Street Crash
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Got signed
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(triggering WWII in Europe)
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Japanese attack on Pearl Harbor
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Allied invasion of Normandy
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Sent on February 22, 1946, by George Kennan.
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UN Charter signed on June 26, 1945; officially came into existence on October 24, 1945.
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August 6, 1945 (Hiroshima) and August 9, 1945 (Nagasaki), atomic bombings.
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North Atlantic Treaty signed
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The Soviet Union's first successful atomic bomb test ("RDS-1")
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Supreme Court decision
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U.S. involvement generally considered to be from the mid-1950s, major escalation from 1964, ended in 1975.
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Passed by Congress
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The foundational technologies were developed in the 1970s; the World Wide Web was invented in 1989 and made available in the early 1990s.
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globally in early 2020 (first cases in late 2019).