The Mexican-American War By Adrian.Aguilar Mar 1, 1845 The official proposal of statehood for Texas is signed by President John Tyler. Click To Read more about The Mexican-American War Period: Mar 1, 1845 to Feb 2, 1848 Mexican-American War Timeline of events Jun 16, 1845 The U.S. officially annexes Texas. Click here to read more about the Mexican-American War Mar 1, 1846 General Zachary Taylor leads U.S. troops past the Nueces River toward the Rio Grande River. To read more about the Mexican-American War Apr 25, 1846 The Mexican-American War begins. Click The Link for more information on the Mexican-American War May 8, 1846 The U.S. wins the Battle of Palo Alto. Click Here for more information on the Mexican-American War May 9, 1846 The U.S. wins the Battle of Resaca de la Palma. Click the link to read more about the Mexican-American War May 13, 1846 Congress officially declares war on Mexico. Click here to read more about the Mexican-American War Jun 1, 1846 The Bear Flag Revolt begins. Click here to read more about the Mexican-American War Aug 14, 1846 Stephen Kearny leads the U.S. army in the occupation of New Mexico Click The Linck to read more about Stephen Kearny leads the U.S. army in the occupation of New Mexico Sep 20, 1846 The U.S. wins the Battle of Monterrey (September 20-24). click here to read more about how The U.S. wins the Battle of Monterrey (September 20-24). Dec 1, 1846 Antonio López de Santa Anna declares himself Mexico's president. Click here to read more about how Antonio López de Santa Anna declares himself Mexico's president. Feb 23, 1847 The U.S. wins the Battle of Buena Vista. Lcik here to read more about how The U.S. wins the Battle of Buena Vista. Apr 1, 1847 The U.S. wins the Battle of Cerro Gordo. Click here to read more about how The U.S. wins the Battle of Cerro Gordo. Click here to read more about how the The U.S. wins the Battle of Cerro Gordo. Sep 14, 1847 The U.S. wins the Battle of Mexico City. Click here to read more about how The U.S. wins the Battle of Mexico City. Feb 2, 1848 The U.S. and Mexico sign the Treaty of Guadalupe Hidalgo. click here to read more about how The U.S. and Mexico sign the Treaty of Guadalupe Hidalgo.