| Term | Definition |
| 1215 | Magna Carta signed in England. |
| 1492 | Columbus reaches America in Caribbean. |
| 1607 | Jamestown, Virginia settled by England. |
| 1620 | Pilgrims land in Plymouth, Massachusetts. |
| 1756-1763 | The French and Indian War, wins land and creates debt for England. |
| 1770 | Boston Massacre, 5 American protesters killed. |
| 1773 | Boston Tea Party, dumping tea to protest taxes, causes Intolerable Acts. |
| 1775 | Battle of Lexington and Concord begins Revolution. |
| 1776 | Jefferson's Declaration of Independence signed in Philadelphia creating United States of America. |
| 1781 | British surrender at Yorktown, Virginia to end Revolution. |
| 1783 | Treaty of Paris officially ends Revolutionary War. |
| 1786 | Shays' Rebellion in Mass. shows weakness of Articles of Confederation. |
| 1787 | US Constitution written in Philadelphia. |
| 1789 | President Washington takes office under new Constitution. |
| 1791 | Madison's Bill of Rights ratified. |
| 1803 | Marbury vs. Madison and Louisiana Purchase. |
| 1812-1815 | War of 1812 with England over impressment, arming natives and other motives. |
| 1819 | Florida purchased from Spain. |
| 1820 | Missouri Compromise admits Missouri and Maine as states. |
| 1823 | Monroe Doctrine warns Europe to stay out of Americas. |
| 1825 | Erie Canal opens. |
| 1836 | Texas gains Independence from Mexico, Battle at Alamo. |
| 1838 | Trail of Tears removes Cherokee from Georgia under Jackson's orders. |
| 1845 | Texas annexed to US. |
| 1846-1848 | War with Mexico. California and southwest join US, Oregon settled, Manifest Destiny complete. |
| 1850 | After gold discovery, California enters union in Compromise of 1850. |
| 1854 | Kansas-Nebraska Act opens west to slavery. |
| 1857 | Dred Scott Decision further protects slavery. |
| 1860 | South Carolina secedes from Union upon Lincoln's election. |
| 1861 | Ft. Sumter attacked, Civil War begins. |
| 1863 | Emancipation Proclamation frees southern slaves. |
| 1865 | Civil War ends, Lincoln Assassinated. |
| 1867 | US purchases Alaska from Russia. |
| 1869 | Transcontinental Railroad completed by linking in Utah. |
| 1876 | Battle of Little Big Horn in Montana-Custer defeated by Sioux Nation. |
| 1877 | Reconstruction completed, nation reunited after Civil War. |
| 1890 | Battle of Wounded Knee in South Dakota-Indian Wars and native resistance over. |
| 1898-1900 | Spanish American War, US wins Philippines and Cuba. |