| A | B |
| radical | people who take extreme political positions |
| John Marshall | Chief Justice of Supreme Court. Wrote the decision in Marybury v. Madison. |
| Marbury v. Madison | Supreme Court case that established the principle of judicial review. |
| unconstitutional | Something that contradicts or violates the law of the Constitution |
| judicial review | The principle that the Supreme Court has the final say in interpreting the Constitution. |
| Louisiana Purchase | The 1803 purchase of the Louisiana Territory from France for $15 million. |
| Napoleon Bonaparte | France's powerful leader who sold the Louisiana Territory to U.S. in order to finance his European wars. |
| Lewis and Clark Expedition | A group of men led by Meriwether Lewis and William Clark whose mission was to explore the Louisiana Territory. They were to see if there was a water route connecting the Mississippi/Missouri Rivers to the Pacific and gather data about the plant, animal, and Native Americans. |
| Corps of Discovery | The Lewis and Clark Expedition. |
| Sacagawea | A Shoshone woman who served as guide and translator for the Lewis and Clark Expedition. |
| Embargo Act of 1807 | An act that stated that American ships were no longer allowed to sail to foreign ports, and closed American ports to British ships. |
| Tecumseh | Shawnee chief who vowed to stop the loss of Native American land by uniting different tribes. |
| James Madison | 4th U.S. President, asked Congress to pass Non-Intercourse Act (no trade with Britain), asked Congress to declare war on Britain in 1812. |
| Dolley Madison | Wife of President Madison known for staying behind as British troops marched and burned Washington D.C.. She is responsbile for saving important documents and famous painting of George Washington. |
| Francis Scott Key | Washington lawyer, held captive on a British ship, watched the British assult on Ft. McHenry, was inspired and wrote "The Star Spangled Banner". |
| Treaty of Ghent | Treaty signed in 1814, which ended the War of 1812; no territory exchanged hands and trade disputes were not resolved. |