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31,443,321
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The Pony Express leaves Sacramento, CA, for St. Joseph, MO, on April 3, 1860.
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President Abraham Lincoln issues the Emancipation Proclamation on September 22, 1862.
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Louisa May Alcott publishes Little Women in 1868.
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Missouri Republican Hiram Rhoades Revels becomes the first black Senator on February 25, 1870.
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38,558,371
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"The Great Chicago Fire" begins October 8, 1871.
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The first Kentucky Derby is run at Churchill Downs in Louisville, KY, on May 17, 1875.
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Kodak® introduces the "Brownie" camera in February 1900.
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76,212,168
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Artist Pablo Picasso introduces Cubism in 1907.
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Henry Ford begins production of the Model T in 1908.
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92,228,496
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Fire kills 146 workers at the Triangle Shirtwaist Factory, on March 25, 1911.
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HMS Titanic strikes an iceberg on April 14, 1912.
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George M. Cohen writes the popular World War I song Over There in 1917.
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106,021,537
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F. Scott Fitzgerald publishes The Great Gatsby in 1925.
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Robert Goddard fires his first liquid-fueled rocket on March 16, 1926.
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William Faulkner publishes The Sound and the Fury in 1929.
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132,164,569
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Marvel Comics introduces superhero Captain America in March 1941
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Walt Disney wins a 1943 Academy Award for his animated short film Der Fuehrer's Face.
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Thirteen stations begin broadcasting commercial television in 1947.
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151,325,798
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RCA broadcasts the first color television program on June 25, 1951.
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C.A. Swanson & Sons introduces the "TV dinner" in 1953.
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Alaska and Hawaii become the 49th and 50th states, respectively, in 1959.
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179,323,175
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Harper Lee's 1961 book To Kill A Mockingbird is a bestseller.
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The Beatles make their U.S. debut on The Ed Sullivan Show, on February 9, 1964.
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The National Organization for Women is founded in 1966
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226,542,199
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MTV airs its first music video ("Video Killed the Radio Star") on August 1, 1981.
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The Space Shuttle Challenger explodes 74 seconds after liftoff on January 28, 1986.
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The stock market loses 22.6 percent of its value on "Black Monday," October 19, 1987.
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248,709,873
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Diana Princess of Wales dies in a Paris car accident, August 31, 1997.
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At age 77, John Glenn becomes the oldest astronaut in space on October 29, 1998.
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In 1990 the average American's income per year was $28,970.00. By 1999, it had risen to $40,810.00
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281,421,906
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Tiger Woods becomes the first golfer to hold all four major golf titles simultaneously by winning the Master's tournament in April 2001.
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The Space Shuttle Columbia breaks apart during reentry, killing the seven astronauts onboard, February 1, 2003.
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Super Bowl XLIII (2009) is the most watched television broadcast in history with 151.6 million viewers.