| A | B |
| 1607 | Jamestown Settlement |
| 1776 | Declaration of Independence |
| 1787 | Constitution was written |
| 1803 | Louisiana Purchase |
| 1861-1865 | Civil War |
| George Washington | First U.S. President |
| Thomas Jefferson | Author of Declaration of Independence |
| Samuel Adams | Leader of the Sons of Liberty |
| Mountain and Basin Region | Western part of U.S. |
| Great Plains | Midwest region of U.S. |
| Central Lowlands | Area surrounding the Great Lakes |
| Appalachian Mountains | Mountainous region of the East |
| Atlantic Coastal Plain | The Eastern coast of the U.S. |
| Gulf Coastal Plain | The part of the U.S. surrounding the Gulf of Mexico |