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Chapter 10. Section 2: The Mexican War & Slavery Extension. Annexation of Texas. 1836- Texas voted to be annexed by the US Protect themselves from Mexico Debate South & Democrats wanted it- slave state? North & Whigs opposed- shift the balance of power.
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Chapter 10 Section 2: The Mexican War & Slavery Extension
Annexation of Texas • 1836- Texas voted to be annexed by the US • Protect themselves from Mexico • Debate • South & Democrats wanted it- slave state? • North & Whigs opposed- shift the balance of power
Worried it would lead to a war with Mexico • John Tyler signed a treaty of annexation with Texas in April 1844 • June- Whigs controlled Senate defeated the treaty
Feb. 1845 Congress approved the treaty • December 1845- Texas became the 28th state
War with Mexico • March- Mexico broke off diplomatic relations with the US • Boundary dispute • Polk wanted more than Texas • Sent Ambassador John Slidell to Mexico City with an offer to buy NM & CA for $30 million
Mexican government refused to receive Slidell • Polk sent 3,000 troops under General Zachary Taylor into southern Texas • set up camp between the Rio Grande & Nueces Rivers • Mexico attacked
Polk asked for a declaration of war • Mexican war was declared on May 13, 1846
Bear Flag Revolt • Group of settlers launched a surprise attack on Sonoma & proclaimed the Republic of CA • Captain John Fremont helped the rebels push the Mexican army out of CA
July 1846 US troops under General Stephen Kearny crossing into New Mexico • Occupied Santa Fe by mid August • Then marched to CA to join Fremont • Together defeated the Mexican Army
Fighting in Mexico • Taylor took the war into Mexico • Battle of Buena Vista Feb. 1847 • Met Santa Anna & 20,000 troops • US won & Santa Anna retreated • Polk dispatched forces under General Winfield Scott to Mexico City
March 1847- Scott captured Veracruz, then marched to Mexico City • Defeated Santa Anna’s forces & ended the war on September 14th
The Treaty of Guadalupe Hidalgo • Signed on February 2, 1848 • Terms • Mexico gave up its claim to Texas & recognized the Rio Grande as the border • Mexico gave NM & CA to the US
US paid Mexico $15 million • US agreed to pay claim made by American citizens against Mexico • 1853 Mexican government sold 30,000 square miles of NM & Arizona to US for $10 million • Known as Gadsden Purchase
Effects of the war • Established boundaries of continental US • Left many Mexicans deeply bitter towards the US & decades of poor relations & misunderstanding • Opened the doors for a large wave of immigration
The Wilmot Proviso • Brought the question of slavery into politics • Worried about the balance of power • Slavery not allowed in the new land • Congress didn’t pass it • Never became law