American History Timeline By hpella 1488 Bartolomeu Dias led an exploration from Portugal southward along African coast,discovering the Cape of Good Hope 1492 Columbus set sail across the Atlantic with 3 ships 1493 Pope Alexander VI decreed the Line of Demarcation 1513 Juan Ponce de Leon explored present-day Florida 1519 Ferdinand Magellan sailed around the world 1539 Hernando de Soto traveled through Florida and North Carolina 1587 The colony established at Roanoke by John White 1588 The Spanish Armada statred 1607 Jamestown was established 1620 Mayflower Compact 1649 Toleration Act started 1676 Bacon's Rebellion 1754 The French and Indian War 1764 Parliament passed the Sugar Act 1765 Stamp Act Congress 1770 Boston Massacre 1773 Parliament passed the Tea Act 1775 Patriots attacked British at Fort Ticonderoga 1783 Treaty of Paris 1803 Louisiana Purchase