KEY events for the years spanning 1821 to 1848, covering the Texas Revolution and Mexican-American War

  • Mexico Independence

    Mexico wins independence from Spain.
  • Occupation of Oregon Country

    The United States and Britain agree to occupy the Oregon country.
  • Mexican President Gets Elected

    Antonia Lopez de Santa Anna is elected president of Mexico.
  • Texas Revolution

    Texas revolution begins at Gonzales.
  • Unsuccessful Revolt

    Californian's unsuccessfully revolt against the Mexican Government.
  • Oregon Trail

    Pioneers start moving West along the Oregon Trail.
  • Texas Becomes Independent

    The U.S. officially parts Texas from America
  • James K. Polk becomes President

    James K. Polk assumes Presidency.
  • Mexican American War Begins

    The Mexican-American War began when Mexican troops crossed the Rio Grande River and opened fire on U.S. troops at Fort Texas.
  • Mexico Looses Territory

    Mexico looses part of its Northern land to the U.S.