George Woods. Mexican American War Timeline- This shows all the important events that had occurred during the war. Who was President of the United States during the Mexican-American War? The catalyst for the Mexican-American War was the U.S. annexation of Texas on 29 December 1845. James K. Polk, the 11th president of the United States, supported manifest destiny and wanted to fight for land for his own benefit. ... U.S. president who commanded U.S. forces during the Mexican war. James K. Polk Served as the president of the United Staetes during the Mexican - American War. Santa Anna left office to fight in the Mexican–American War. 18 Two long years had passed after the initial shots were fired, sparking the Mexican American War in 1846. Thus, ending the war … He served as the nation's 11th president from 1845 until 1849. Why was President Polk willing to go to war with Mexico? Start studying The Mexican-American War. Polk grew up in Tennesse, and practiced law, and at age 30, became elected for congress as a Democrat in 1825. The Mexican–American War, also known in the United States as the Mexican War and in Mexico as the Intervención Estadounidense en México (U.S. intervention in Mexico), was an armed conflict between the United States and Mexico from 1846 to 1848. Antonio López de Santa Anna (1794–1876) 20 May 1847 15 September 1847 Liberal Party: He reassumed the presidency when De Anaya left office to fight in the Mexican–American War. Both led troops US troops in the Mexican-American War. During the Mexican-American War, the United States and Mexico fought over. The Mexican-American War The U.S. clashed with Mexico in 1846 when Mexico resisted James K. Polk 's vision of a "manifest destiny" for America. The U.S. president arranged for a ship to take Santa Anna from his exile in Cuba to Mexico for the purpose of working for peace. For the US, … After United States forces under General Winfield Scott captured and occupied Mexico City in 1848, Mexican President Antonio López de Santa Anna surrendered. - 1074111 Polk took advantage of the animosity between the two nations to advance a political agenda focused on Manifest Destiny (the belief that the … ... Mexican general who led Mexican troops during the Mexican war. to further the idea of Manifest Destiny. Mexican-American War - Mexican-American War - Invasion and war: When war broke out, former Mexican president and general Antonio López de Santa Anna (the vanquisher of the Texan forces at the Alamo in 1836) contacted Polk. What did Zachary Taylor and Winfield Scott have in common? James K. Polk was the president during the Mexican-American War. War was declared as part of America's effort to forge westward. He left congress in 1823 to serve as a governor in Tenesse. When Mexico responded by ending diplomatic relations with the U.S. government, President James K. Polk asked Congress to declare war on Mexico. Learn vocabulary, terms, and more with flashcards, games, and other study tools. During the Mexican-American War, the Mexican leader, Santa Anna led the Mexican nation and acted as its military leader as well. Congress abolished the vice presidency and he was appointed as substitute president.