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1The Mexican WarManifest Destiny continued12The Mexican WarHow did the United States gain Oregon and Texas?What were the causes and results of the United States war with Mexico?What new lands did the United States acquire as a result of the Mexican War?How did a mix of cultures shape California and the Southwest?23The United States Gains OregonOregonPresident Polk wanted Oregon all the way to the northern border of 54 40 North. An election slogan was: Fifty-Four Forty or Fight!The United States and Britain agreed to a compromise in 1846. The two countries divided Oregon at latitude 49N latitude.Later, the Oregon Territory became the states of Oregon (1859), Washington(1889), and Idaho(1890).

34The United States Gains TexasTexasIn 1844, Texan president Sam Houston signed a treaty of annexation with the United States.Fearing war with Mexico, the United States Senate refused to ratify the treaty.Houston pretended that Texas might ally itself with Britain. This move prompted Congress to pass a joint resolution admitting Texas to the Union.45The Mexican War1846 to 1848

56Division over the warAmericans were not in total agreement over a war with Mexico.In general, southerners and westerners supported the war.Many in the north opposed the war because they thought it would spread slavery.67Division over the warFrederick Douglass, a former slave, was against the war.

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Causes & Effects17The U.S. annexes TexasPolk wanted to acquire California and New MexicoPolk provokes Mexico by getting it to attack U.S. soldiers in the disputed area of TexasThe Treaty of Guadalupe Hidalgo ends the war(1848)Mexico gives up a large piece of land(Mexican Cession)The U.S. extends its borders to the Pacific Ocean18Causes and Results of the Mexican WarCausesMexico did not accept Texan independence and was outraged by the United States annexation of Texas.Americans resented Mexicos rejection of President Polks offer to buy California and New Mexico.A border dispute sparked war. Both nations claimed land between the Rio Grande and the Nueces River and sent troops into the area. President Polk claimed Mexico had invaded American soil and asked Congress to declare warResultsDuring the war, Americans in northern California revolted against Mexican rule and declared California an independent republic, the Bear Flag Republic. In the fighting, the United States won control of all of New Mexico and California. In a battle at Chapultepec near Mexico City, American forces took over the Mexican capital, despite brave fighting by Mexican soldiers.The Mexican government moved to make peace. In 1848, it signed the Treaty of Guadalupe-Hidalgo, ending the war.

19The Mexican War

The last part of Polks plan was to capture Mexico City.1920The United States Acquires New LandsIn the Treaty of Guadalupe-Hidalgo, Mexico had to cede, or give up, some of its lands.Mexico ceded all of California and New Mexico to the United States. These lands were called the Mexican Cession.In return, the United States paid Mexico $15 million.The United States agreed to respect the rights of Spanish-speaking people in the Mexican Cession.In 1853, the United States bought the Gadsden Purchase.The United States wanted to build a railroad across an area that is now the southern part of Arizona and New Mexico.The United States paid Mexico $10 million for the strip of land, known as the Gadsden Purchase.2021Expansion of the U.S.

2122Expansion of the U.S.

2223Expansion of the U.S.

2324A Mix of Cultures in California and the SouthwestAfter 1848, English-speaking settlers flocked to the Southwest. They brought their culture and ideas about democracy.Ideas and practices that Americans adopted from the Mexican Americans who lived in the Southwest. Silver mining techniques.Methods of irrigation.Spanish and Native American words, for example, stampede, buffalo, tortilla, soda, and tornado.Some Mexican laws, for example, one law that said that a husband and wife owned property jointly and another law that said landowners could not cut off water to their neighbors. 2425Section 4 AssessmentHard feelings between Mexico and the United States had been growing since Texas declared independence. War between the United States and Mexico finally broke out whena) Congress annexed Texas.b) Mexican and American troops clashed in an area of land claimed by both countries.c) Mexico refused to sell California.d) Sam Houston threatened to ally Texas with Britain.

American settlers in the Southwest adopted Mexican ways fora) mining silver.b) building railroads.c) writing a constitution.d) organizing a cession.2526Section 4 AssessmentHard feelings between Mexico and the United States had been growing since Texas declared independence. War between the United States and Mexico finally broke out whena) Congress annexed Texas.b) Mexican and American troops clashed in an area of land claimed by both countries.c) Mexico refused to sell California.d) Sam Houston threatened to ally Texas with Britain.

American settlers in the Southwest adopted Mexican ways fora) mining silver.b) building railroads.c) writing a constitution.d) organizing a cession.26