Settlement of Jamestown May 14,1607 Tobacco is introduced to Jamestown 1612 Proclamation Line of 1763 October 7, 1763 Stamp Act November 1, 1765 Boston Massacre March 5, 1770 Boston Tea Party December 16, 1773 Fighting erupts at Lexington and Concord April 19, 1775 Declaration of Independence July 4, 1776 Washington crosses the Delaware December 25, 1776 Battle of Saratoga October 7, 1777 Winter at Valley Forge December, 1777 Battle of Yorktown October 19, 1781 Treaty of Paris 1783 September 3, 1783 Shays’ Rebellion January, 1787 Constitutional Convention May 25, 1787 Constitution is adopted September 17, 1787 George Washington becomes the 1st President April 30, 1789 Samuel Slater installs first mill in America 1793 Cotton Gin is invented by Eli Whitney March 14, 1797 Jefferson is elected as the 3rd President February 17, 1801 Louisiana Purchase April 30, 1803 Corps of Discovery returns after journey September 23, 1806 War of 1812 begins June 18, 1812 Missouri Compromise January 26, 1820 Nat Turner Rebellion August 21, 1831 Telegraph is invented January 6, 1835 Battle of the Alamo ends March 6, 1836 Oregon Trail begins 1843 Texas becomes a state December 29, 1845 Mexican American War begins April 25, 1846 Gold discovered in California January 24, 1848 California becomes a state September 9, 1850 Kansas-Nebraska Act May 30, 1854 John Brown raid at Harpers Ferry October 16, 1859 Lincoln becomes the President th 16 March 4, 1861 Shots fired at Fort Sumter April 12, 1861 First Battle of Bull Run July 21, 1861 Battle of Antietam September 17, 1862 Emancipation Proclamation September 22, 1862 Battle of Gettysburg July 1, 1863 Confederate surrender at Appomattox Courthouse April 12, 1865 Lincoln is assassinated April 14, 1865