Mexican-American War Worksheet

Mexican-American War: Causes and Consequences

Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.

1. What was the primary belief that fueled American expansion westward, leading to conflicts like the Mexican-American War?

2. Which river did the United States claim as the border with Mexico, leading to a dispute?

3. The Mexican-American War took place between the years   and  .

4. The treaty that officially ended the Mexican-American War was called the Treaty of  .

5. Explain two reasons why the United States declared war on Mexico.

6. The United States gained a vast amount of territory from Mexico as a result of the war.

7. The annexation of Texas by the United States was a direct cause of the war.

8. Examine the map below, which shows the territorial changes after the Mexican-American War. Identify at least three present-day U.S. states that were part of the Mexican Cession.