| A | B |
| Election of 1800 | was the fourth quadrennial U.S. presidential election, in which Democratic-Republican candidate Thomas Jefferson defeated incumbent Federalist President John Adams. Often referred to as the "Revolution of 1800," it marked the first peaceful transfer of power between opposing political parties in American history |
| Marbury v Madison | a landmark U.S. Supreme Court case that established the principle of judicial review, giving courts the power to strike down laws that violate the Constitution. |
| John Marshall | an American statesman, jurist, and Founding Father who served as the fourth chief justice of the United States from 1801 until his death in 1835. He remains the longest-serving chief justice and fifth-longest-serving justice in the history of the U.S. Supreme Court, and he is widely regarded as one of the most influential justices ever to serve. |
| Judicial Review | is the power of courts to examine the actions of the legislative and executive branches of government and declare them void if they violate the constitution. |
| Samuel Chase | was impeached by the House of Representatives on grounds of letting his partisan leanings affect his court decisions, but was acquitted the following year by the Senate and remained in office. Jefferson attemps to remove a Justice. |
| Tripolian War | The Tripolitan War, fought from 1801 to 1805, marked the United States' first military engagement against the Barbary states of North Africa |
| Louisiana Purchase | of 1803 was a land deal where the United States bought 828,000 square miles of land west of the Mississippi River from France for $15 million |
| Strict Constructionist | is a legal philosophy that interprets the U.S. Constitution and statutes based strictly on their literal, narrow text and exact wording, rather than factoring in modern societal changes or unstated intentions |
| Loose Constructionist | is a legal philosophy of constitutional interpretation that allows for a broad and flexible reading of the U.S. Constitution, considering modern societal needs and underlying intent rather than strictly adhering to literal wording |
| Corps of Discovery | specially established unit of the U.S. Army, objectives were scientific and commercial – to study the area's plants, animal life, and geography, and to learn how the Louisiana Purchase could be exploited economically.[1] Aside from its military composition, the Corps' additional personnel included scouts, boatmen, and civilians. |
| Meriwether Lewis | leader of the Corps of Discovery, |
| Sacajawea | woman who, in her teens, helped the Lewis and Clark Expedition in achieving their chartered mission objectives by exploring the Louisiana Territory. Sacagawea traveled with the expedition thousands of miles from North Dakota to the Pacific Ocean, helping to establish cultural contacts with Native American people and contributing to the expedition's knowledge of natural history in different regions. |
| Burr Conspiracy | was an alleged 1805–1807 plot by former U.S. Vice President Aaron Burr to create an independent country in the American Southwest or seize Spanish territories in Mexico and Florida |
| Embargo Act of 1807 | a general trade embargo on all foreign nations that was enacted by the United States Congress.it represented an escalation of attempts to coerce Britain and France to cease their interference with American merchant shipping |
| James Madison | was a Founding Father and the fourth president of the United States from 1809 to 1817 Kknow as "GodFather of the Constitution" |