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Manifest Destiny:

Manifest Destiny:. War With Mexico. The New Mexico Territory. In the early 1800s, New Mexico was the name of a vast region sandwiched between the Texas and California territories. It included all of present-day New Mexico, Arizona, Nevada, and Utah and parts of Colorado and Wyoming.

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Manifest Destiny:

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  1. Manifest Destiny: War With Mexico

  2. The New Mexico Territory • In the early 1800s, New Mexico was the name of a vast region sandwiched between the Texas and California territories. • It included all of present-day New Mexico, Arizona, Nevada, and Utah and parts of Colorado and Wyoming. • When Mexico won its independence from Spain in 1821, it inherited the New Mexico province, however the Mexicans had very little control over the distant region. • They welcomed American traders into New Mexico hoping that the trade would boost the economy there.

  3. The Santa Fe Trail • The Santa Fe Trail left the Missouri River near Independence, Missouri and crossed the prairies to the Arkansas River which it followed west toward the Rocky Mountains before turning south into New Mexico Territory. • It became a busy trade route for hundreds of Americans who brought cloth and firearms which they exchanged for silver, furs, and mules. • The trail remained in use until the arrival of the railroad in 1880.

  4. California’s Spanish Culture • Spanish explorers and missionaries from Mexico had been the first Europeans to settle in California. • The Spanish used the missions to convert Native Americans to Christianity. • By 1820, California had 21 missions with about 20,000 Native Americans living in them. • After Mexico gained its independence from Spain in 1821, California became a state in the new Mexican nation. • In 1833, the Mexican government abolished the missions, gave some land to the Native Americans, and sold the rest. • Mexican settlers bought these lands and built huge properties called ranchos. • The Native Americans who worked on them were treated like slaves.

  5. Manifest Destiny and California • At first the Mexican authorities welcomed Americans in California since they brought trade and contributed to the local economy. • As more and more Americans moved west, though, interest grew in adding California to the nation. • They saw the advantage of extending the United States territory to the Pacific since they would be safely bordered by an ocean instead of a foreign power. • President James Polk twice offered to buy California and New Mexico from Mexico, but Mexico refused.

  6. Tensions Rising • President Polk was determined to get California and New Mexico from Mexico. • He wanted, however, to provoke Mexico into taking military action first. • This way he could justify the war to Congress and the American people. • Mexico had never recognized the independence of Texas. • They also argued that the border between Mexico and the United States was the Nueces River, 150 miles north of the Rio Grande River which the U.S. claimed was the border. • Because of this dispute Mexico had stopped payments to American citizens for losses suffered during Mexico’s war for independence.

  7. Conflict Begins • Polk sent an agent, John Slidell, to Mexico to offer $30 million for California and New Mexico in return for Mexico’s acceptance of the Rio Grande as the Texas boundary. • The Mexican government refused to discuss the offer and announced its intention to reclaim Texas for Mexico. • In response, Polk ordered General Zachary Taylor to march to the borderland between the Nueces and Rio Grande and build a fort there. • On April 24, 1846, Mexican soldiers attacked a small force of Taylor’s soldiers. • Taylor sent the report the president wanted to hear: “Hostilities may now be considered as commenced.” • Polk’s cabinet agreed that the attack was grounds for war with Mexico.

  8. American Attitudes Toward the War • The American people were divided over the war with Mexico. • Polk’s party, the Democrats, generally supported it, while the Whigs and many Northerners accused him of waging the war to spread slavery. • Newspapers generally supported the war, and volunteers quickly signed up for military service. • As time went on, however, antiwar feeling grew, particularly in the North.

  9. Polk’s War Plan • President Polk had a 3-part plan for the war with Mexico. • 1st, American troops would drive Mexican forces out of the disputed border region in Texas and make the border secure. • 2nd, the United States would seize New Mexico and California. • Finally, American forces would take Mexico City, the capital of Mexico. • Zachary Taylor helped accomplish the 1st goal, and General Stephen Watts Kearny and his troops took New Mexico. • They were halfway there.

  10. California and the Bear Flag Republic • In June, 1846, a small group of Americans had seized the town of Sonoma north of San Francisco and proclaimed the independent Republic of California. • They called the new country the Bear Flag Republic because their flag showed a bear and a star. • At the time, they were unaware of the outbreak of war with Mexico. • The revolt was soon taken over by American military men John C. Fremont and Kit Carson, who saw it as an opportunity for annexation by the United States.

  11. Naval Intervention • In July 1846, a U.S. Navy squadron under Commodore John Sloat captured the ports of Monterey and San Francisco, and declared California annexed to the United States. • They soon captured San Diego and Los Angeles as well. • After Sloat’s ships left, however, many Californians in San Diego rose up in arms against the Americans. • Eventually, General Kearny arrived, and after a stiff fight put down the rebellion. • By January 1847, California was fully controlled by the U.S

  12. The Capture of Mexico City • Polk gave the task of capturing Mexico City to General Winfield Scott. • In March 1847, Scott captured the Mexican port of Veracruz after a 3 week siege, and then marched toward Mexico City. • They had to fight all along the way, but by mid-September, the Americans had taken Mexico City, and the Mexican government surrendered. • The United States lost 1,721 men to battle and more than 11,000 to disease in the Mexican War, but Mexico’s losses were far greater. • It cost the U.S. nearly $100 million, but it cost Mexico half its territory.

  13. The Peace Treaty • The Treaty of Guadalupe Hidalgo was signed in February 1848. • In the treaty Mexico gave up all claims to Texas and agreed to the Rio Grande as the border. • Furthermore, in what was called the Mexican Cession, Mexico ceded its provinces of California and New Mexico to the United States. • In return, the United States gave Mexico $15 million. • In 1853 the United States paid Mexico an additional $10 million for the Gadsden Purchase, a strip of land along the southern edge of the present day states of Arizona and New Mexico. • With this, the United States mainland reached its present size.

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