| A | B |
|---|
| Columbus first lands in the Americas | 1492 |
| The founding of Jamestown | 1607 |
| The Revolutionary War | 1775-1783 |
| The Declaration of Independence | 1776 |
| The U.S. Constitution is written | 1787 |
| The Louisiana Purchase | 1803 |
| The War of 1812 | 1812-1815 |
| Missouri Compromise | 1820 |
| Mexican-American War | 1846-1848 |
| American Civil War | 1861-1865 |
| Post-Civil War Reconstruction Ends | 1876 |
| The Spanish-American War | 1898 |
| The First World War | 1914-1918 |
| The Great Depression begins | 1929 |
| FDR's New Deal begins | 1933 |
| The Second World War | 1939-1945 |
| The Korean War | 1950-1953 |
| Brown vs. Board of Education | 1954 |
| The Vietnam War (greatest U.S. involvement) | 1965-1973 |
| The Fall of the Berlin Wall | 1989 |
