Louisiana Purchase: A Constitutional Dilemma
- Rosie Jayde Uyola

- Oct 21
- 2 min read
Updated: Oct 27
Target: I can explain the constitutional conflict Thomas Jefferson faced regarding the Louisiana Purchase by analyzing a primary source letter and a map.
Key Vocabulary
Louisiana Purchase: The 1803 acquisition of a huge territory in North America by the United States from France.
Strict Interpretation: Believing that the federal government only has the powers explicitly listed in the Constitution.
Constitution: The supreme law of the United States; the official rulebook for the government.
Ratify: To formally approve or pass something, making it officially valid.
Implied Powers: Powers that are not explicitly stated in the Constitution but are suggested or implied by it.
"Necessary and Proper": A clause in the Constitution that gives Congress the power to make laws it deems necessary to carry out its other duties.










Part 2: Analyzing the Sources
Directions: Read the letter from Thomas Jefferson (Document 1) and analyze the map (Document 2). Then, answer the questions that follow.
Document 1: Thomas Jefferson's Letter to John Breckinridge, 1803
Document 2: Map of the Louisiana Purchase, 1803

Think-Ink-Pair-Share
Directions: Answer questions 1-3 on your own.
Then, work with a partner to answer question 4.
According to Jefferson's letter, what is the constitutional problem with the Louisiana Purchase?
Sentence Starter: Jefferson states that the constitutional problem is…
Look at the map. Why did Jefferson believe the Louisiana Purchase was for the "greater good" of the United States?
Sentence Starter: The map shows that the purchase was for the "greater good" because it…
How does Jefferson justify his decision to "bend the rules" of the Constitution?
Sentence Starter: Jefferson justifies his actions by arguing that...
(Work with your partner) How did Thomas Jefferson reconcile his belief in a strict interpretation of the Constitution with his decision to buy the Louisiana Territory?
Use evidence from both the letter and the map.
Sentence Starter: Although Jefferson believed in a strict interpretation, he decided to purchase Louisiana because... For example, the map shows... and in his letter, he admits...


