Mexican-American War: Quick Facts


Facts

Also Known As Mexican War • Guerra de Estados Unidos a Mexico • Guerra de 1847
Date April 1846 - February 1848
Location Mexico • Texas • United States
Participants Mexico • United States

Did You Know?

  • U.S. Gen. Winfield Scott's troops marched along the same route to Mexico City that Hernan Cortďż˝s took when he attacked the Aztecs.
  • Gold was found in California only days before the United States obtained it through the Treaty of Guadalupe Hidalgo.
  • Abraham Lincoln's criticism of the war led to comparisons between him and Benedict Arnold, a traitor against the U.S. during the American Revolutionary War.
  • The Mexican-American War was the first armed U.S. conflict to be fought mostly in another country.

Photos and Videos



Timeline

The Battle of Monterrey
Battle of Monterrey
September 20, 1846 - September 24, 1846
Battle of Buena Vista
Battle of Buena Vista
February 22, 1847 - February 23, 1847
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Battle of Contreras
August 19, 1847 - August 20, 1847
Chapultepec Castle during the Mexican-American War
Battle of Chapultepec
September 12, 1847 - September 14, 1847

Key People

Ulysses S. Grant
Ulysses S. Grant
president of United States
James K. Polk
James K. Polk
president of United States
John A. Logan
John A. Logan
United States general and politician
Lew Wallace
Lewis Wallace
American author, soldier, and diplomat
Zachary Taylor
Zachary Taylor
president of United States
Antonio LĂłpez de Santa Anna
Antonio LĂłpez de Santa Anna
president of Mexico
SeguĂ­n, Juan
Juan SeguĂ­n
Tejano revolutionary and politician
Winfield Scott
Winfield Scott
American army officer
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John Bidwell
American politician
Stephen Watts Kearny, engraving by T.B. Welch
Stephen Watts Kearny
United States military officer
Robert F. Stockton.
Robert F. Stockton
United States naval officer
Franklin, William Buel
William Buel Franklin
United States general
Bravo, portrait by an unknown artist
NicolĂĄs Bravo
president of Mexico
Irvin McDowell
Irvin McDowell
United States general

Causes and Effects

Causes
  • A border dispute over whether Texas ended at the Nueces River (Mexican claim) of the Rio Grande (U.S. claim)
  • An attack on American troops by Mexican soldiers in the disputed area between the two rivers on April 25, 1846.
  • The Unites States annexation of Texas in 1845
Effects
  • General Zachary Taylor, a hero of the war, used his newfound notoriety to become the twelfth president of the U.S.
  • Mexico ceded to the United States nearly all of the territory now included in the states of New Mexico, Utah, Nevada, Arizona, California, Texas, and western Colorado in exchange for $15 million
  • The reopening of the slavery-extension issue, which had been largely dominant since the Missouri Compromise of 1820, and a corresponding rise in sectional antagonism in the U.S.