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  On April 19, 1775 and is called the "shot heard round the world".
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  War started/Ended
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  In 1776 the Second Continental Congress declared the independence of the United States from Great Britain.
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  (July 4, 1776) - The Continental Congress agrees to Thomas Jefferson's Declaration of Independence.
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  (Dec. 25, 1776) - George Washington and his troops cross the Delaware River on Christmas night and surprise the enemy.
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  (June 14, 1777) - The Continental Congress adopts the "Stars and Stripes" Flag sewn by Betsy Ross.
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  (September 19 - October 17, 1777) - British General John Burgoyne surrenders his army to the Americans after suffering defeat at the Battles of Saratoga.
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  (Feb. 16, 1778) - France recognized the United States as an independent country with the Treaty of Alliance
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  (March 2, 1781) - Defined the official government of the United States.
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  (Oct. 19, 1781) - The last major battle of the American Revolutionary War. British General Cornwallis' surrender at Yorktown was the unofficial end to the war.
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  (Sept. 3, 1783) - Treaty that officially ended the war.