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The Impact of Westward Expansion
May 8, 2025
Crash Course U.S. History: Texas and California
Manifest Destiny and Westward Expansion
Manifest Destiny
: Term by journalist John O'Sullivan to justify American expansion from Atlantic to Pacific Oceans.
Emphasized economic motivations and Jefferson's "empire of liberty."
Economic Expansion
: Driven by opportunities in the west, despite existing inhabitants like Native Americans and Mexicans.
Slavery
: A significant issue tied to expansion, postponed for later discussion.
Oregon Trail and Settlements
Oregon Trail
: Nearly 300,000 people traveled to the western U.S. by 1860.
Oregon
: Jointly controlled by the U.S. and Britain.
Northern Mexico
: Included present-day Texas, Arizona, Utah, Nevada, New Mexico, and California.
Only New Mexico and California had significant settlements.
Texas Independence and Annexation
Mexican Land Grants
: Mexico's government granted land to Moses Austin for economic development.
Stephen Austin sold parcels, leading to 7,000 Americans in Texas.
Political Tensions
: Mexico annulled land contracts and banned further American immigration.
Texas Independence
: Resulted from demands for autonomy and led to the Alamo and San Jacinto battles.
Texas became the Lone Star Republic.
Annexation Issues
: U.S. delayed annexation due to slavery concerns; annexed in 1845.
The Mexican-American War
President James K. Polk
: Sought to acquire California from Mexico.
Border Disputes
: Troops sent to disputed regions, leading to war.
Public Opinion
: Majority supported the war; critics included Thoreau and Lincoln.
Treaty of Guadalupe Hidalgo (1848)
: Mexico ceded Texas and California, U.S. paid $15 million.
California and the Gold Rush
Post-Treaty California
: Increase in Spanish-speaking Mexicans and Native Americans under U.S. jurisdiction.
Rising nativism and anti-immigrant sentiment.
Gold Rush
: Population boom in California due to gold discovery in 1848.
Chinese immigrants and women played roles in economic activities.
Statehood and the Compromise of 1850
California Statehood
: Admitted as a free state, sparking southern concerns.
Compromise of 1850
: Negotiated by Henry Clay to maintain the North-South balance.
Included California as a free state, banned slave trade in D.C., and enforced fugitive slave laws.
Social and Political Implications
Nativism
: Anti-immigrant, anti-Catholic sentiment affected politics.
The "Know-Nothings" party emerged.
Civil Rights Discrimination
: California constitution limited civil rights to whites.
Impact of Expansion
: Failure to extend liberties to minorities and uphold U.S. ideals fueled tensions.
Conclusion
Inevitability of Civil War
: Expansion and slavery set the stage for future conflicts.
Governance Issues
: U.S. struggled to govern by its own ideals, affecting minority groups.
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