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  The Wright Brothers suceed in the first airplane flight in 1903.
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  The first World War begins in Europe in 1914
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  Germany declared war on Russia and France; Great Britain declared war on Germany and Austria
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  In 1917, the United States enters the first World War.
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  In 1918, the first World War ends after starting in 1914.
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  The eighteenth amendment was established in 1919 to ban alcoholic drinks
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  In 1933 Hitler and the Nazi party rises to power in Germany
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  Germany invades Poland in 1939
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  The United States enters the 2nd World War in 1941.
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  In 1941, Japan bombs Pearl Harbor.
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  After an atomic bombing on Hiroshima and Nagasaki, Japan surrenders in 1945.
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  The Korean War begins
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  U.S. troops invade Vietnam
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  A national orginization for women is created to help with women rights
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  In 1968, Martin Luther King Jr.was assassinated by James Earl Ray.
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  United States astronaut first steps foot on the moon in 1969
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  After the Watergate scandal, President Nixon is forced to resign and Vice President, Gerald R. Ford takes his place.
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  President Ronald Reagan and the Soviet leader signed the Intermediate-Range Nuclear Forces Treaty.
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  The World Trade Center and Pentagon was attacked by terrorists on September 10, 2001 by hijacked jets.
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  The United States forces invade Iraq in 2003.
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  In 1973, the United States signs cease-fire with North Vietnam and Vietcong.