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  The Columban Exchange was ceated by the journey Christropher Columbus led.
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  America was named after a rival explorer, Amerigo Vespucci after he made the first two voyages to the New World.
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  This is when he led 180 men southward into the heart of Peru and the day they arrived there
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  The French and Britain War began. This is when the Britain(and the colonists) fought the French and Indians to gain control of the Ohio Valley Territory.
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  This is when he led the first group of pioneers across the Appalachians Mountains. I am not sure the date and month of the event.
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  The Boston Massacre occurred In Boston,Maryland. This happened because a group of about 50 unemployed colonists harrassed a British sentry(soldier) by throwing objects like snowballs,shells, and rocks.
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  This is the year the Declaration of Independence was signed.
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  This is the year when the Articles of Conderation were created by John Dickson, a Penn statesman.
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  This is the year that the Treaty of Paris was signed.
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  this is when it was adopted by the confederation congress
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  This is the year the U.S. Constitution was ratified.
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  This is the year Washington began to serve as president.He then ended in 1797.
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  This is the year Adam became president. He then ended in 1801.
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  This the year Jefferson beacame president. He then ended in 1809.
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  This is when the U.S. bought all of the Lousiana Territory for $15 million.
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  This is the year Madison became president. He then ended in 1817.
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  this is when the war started and the U.S. and Great Britain clashed.
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  This is the year Monroe became president. He then ended in 1825.
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  The Old NorthWest and the southern frontier were formed by pioneers moving there. I am not sure the day and month.
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  This is the year the Monroe Doctrine was created.
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  This is the year Quincy became president. He then ended in 1829.
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  This is the year Jackson became president. He then ened in 1837.
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  This is when the act was signed into a law by Andrew Jackson.
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  This is the year Buren became president. He then ended in 1841.
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  This is the year Harrison became president. he was only president for a month. So he ended in April 1841.