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On April 15th, 1865 President Abraham Lincoln was assassinated by a lone assassin, John Wilkes Booth, at Ford's Theatre in Washington DC.
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The completion of the transcontinental railroad on May 10th, 1869 drastically increased the efficiency of the railroad networks in the United States, allowing people to cross the country in a week rather than months.
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On February 3, 1870 the 15th amendment to the constitution was ratified, making it illegal to deny a citizens right to vote based on race or color.
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On March 7, 1876 Alexander Graham Bell successfully patented the telephone in the United States.
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On January 27, 1880 Thomas Edison received the patent for the light bulb, which led to universal use of the electric light later down the road.
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On January 16, 1883 the Pendleton Civil Service Act was passed, making federal jobs be awarded based on merit and exams rather than party affiliation.
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On November 18th, 1903, the U.S. obtained the rights to build the Panama Canal, which eventually led to the construction of the Panama Canal, which linked the Pacific and Atlantic oceans.
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On June 30, 1906 the Meat Inspection Act was passed, making strict guidelines on how meat is branded, sold, and making sure it is slaughtered and processed under sanitary conditions.
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On October 1, 1908 the first model t was sold, paving the way for the assembly line and the rise of the automobile.
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The assassination of Archduke Franz Ferdinand in 1914 sparked the beginning of WW1 and indirectly lead to the events of WW2.
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In the midst of WW1, Germany sends a secret telegram to Mexico proposing a military alliance between Germany and Mexico if the U.S. entered WW1, it is then intercepted by British intelligence and is shown to the U.S.
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On June 28th, 1919 the Treaty of Versailles is signed, officially ending World War 1.
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in the midst of the Great Depression, Franklin Roosevelt is elected, and the U.S. slowly starts to recover from the Depression
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On December 7 of 1941, the Japanese military launched a surprise air raid on the pacific fleet in pearl harbor, which led to the U.S. entering World War 2.
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On June 6th, 1944 the allied forces invaded Normandy and successfully took it, leading to the liberation of France and marked a key victory for the allied powers.
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on July 16th, 1945, the U.S. tested the first successful atomic bomb, which was later used on Japan in July to defeat the Japanese.
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President Truman delivers a speech to congress, in which he announced that the U.S would provide political, military, and economic assistance to all democratic nations facing trouble with authoritarian forces
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White riding through the streets of Dallas in an open topped convertible, President Kennedy was shot and died from his injuries.
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Neil Armstrong and Buzz Aldrin set foot on the moon, marking the first landing on the moon.
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President Nixon resigns after being involed in the Watergate Scandal, in which his administration covered up involvement in the break in of the Democratic National Committee Headquarters