The Mexican-American War began in 1846.

The Mexican-American War was caused by a combination of factors, including the annexation of Texas by the United States, the dispute over the border between Texas and Mexico, and the American desire for more territory.

Zachary Taylor led the invasion of Mexico.

Antonio López de Santa Anna led the defense of Mexico City.

The Battle of Buena Vista is considered the turning point of the Mexican-American War.

The Treaty of Guadalupe Hidalgo ended the Mexican-American War.

The main territorial result of the Mexican-American War for the United States was the acquisition of California, New Mexico, and Texas.

The main territorial result of the Mexican-American War for Mexico was the loss of California, New Mexico, and Texas.

13,283 American soldiers died in the Mexican-American War.

25,000 Mexican soldiers died in the Mexican-American War.

James K. Polk was the American president during the Mexican-American War.

Antonio López de Santa Anna was the Mexican president during the Mexican-American War.

Zachary Taylor was killed at the Battle of Buena Vista.

Pedro de Ampudia was killed at the Battle of Chapultepec.

The 1st U.S. Infantry Regiment fought at the Battle of the Alamo.