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Jan 1, 1492
Columbus discovers America
Columbus discovers America by order of Kings Ferdinand and Isabella of Castile -
the first black slaves
In 1619 , they begin to get black slaves from Africa to work in the British colonies. -
The Declaration of Independence
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George Washington is elected first President of the United States .
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buy Louisiana to France for US $ 15 million
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acquired Florida from Spain for US $ 5 million.
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Between 1846 and 1848 United States wins the entire region from Texas to California.
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In 1853 , Arizona and New Mexico are purchased from Mexico for US $ 10 million
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Abraham Lincoln is elected president
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Abraham Lincoln is assassinated
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Russia sold Alaska for US him $ 7 million.
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The ``New Deal´´ Constitution