U.S history By landerzurb Jan 1, 1492 Columbus discovers America Columbus discovers America by order of Kings Ferdinand and Isabella of Castile Jan 1, 1619 the first black slaves In 1619 , they begin to get black slaves from Africa to work in the British colonies. Jul 4, 1776 The Declaration of Independence Apr 19, 1789 George Washington is elected first President of the United States . Apr 19, 1803 buy Louisiana to France for US $ 15 million Apr 19, 1819 acquired Florida from Spain for US $ 5 million. Apr 19, 1846 Between 1846 and 1848 United States wins the entire region from Texas to California. Apr 19, 1853 In 1853 , Arizona and New Mexico are purchased from Mexico for US $ 10 million Apr 19, 1860 Abraham Lincoln is elected president Apr 19, 1865 Abraham Lincoln is assassinated Apr 19, 1867 Russia sold Alaska for US him $ 7 million. Apr 19, 1920 The ``New Deal´´ Constitution