Summary
Highlights
The video introduces the period of 1844-1877, focusing on how westward expansion, fueled by President James K. Polk's campaign for western expansion, created significant problems that eventually led to the Civil War. It emphasizes that westward migration has always been a core part of American identity, dating back to colonial times and the Louisiana Purchase.
Historically, restrictions like the Proclamation Line of 1763 sparked colonial grievances. Post-Revolution, Americans quickly moved west. The Louisiana Purchase in 1803 doubled the US size, offering land for farmers. Southern cotton farmers, needing fresh soil due to cotton's nutrient depletion, found westward expansion crucial. The West also served as a 'social safety net,' a pressure release valve for populated areas, fulfilling a mythological quality for Americans.
The primary ideological driver was 'Manifest Destiny,' a term popularized by John O'Sullivan. It posited that God blessed the U.S. with a mission to expand across North America, from 'sea to shining sea.' This belief, however, led to conflicts like the Mexican-American War, the Civil War, and violence with American Indians, who were seen as barriers to progress and not using land 'properly'.
Americans moved West to exploit natural and mineral resources, seeking new economic opportunities in Texas, Oregon, and California. The annexation of Texas in 1845 contributed to the Mexican-American War. Oregon's fertile soil, particularly the Willamette Valley, sparked 'Oregon fever,' drawing 350,000 settlers by 1860 via the Oregon Trail. Polk's 54°40' or Fight slogan reflected this desire. The 1848 California Gold Rush led to a massive migration of Americans, positioning California for US acquisition.
Government policies like the Preemption Act of 1841 granted squatters the right to purchase up to 160 acres of federal land at low prices, after living and improving it for five years. This led to settlement waves in Nebraska and Kansas. The Homestead Act of 1862, passed during the Civil War, offered 160 acres of land for free under similar conditions, motivating a huge influx of migrants and leading to the settlement of most western territory by 1890, effectively 'closing' the frontier. These policies often broke treaties and displaced American Indian groups, leading to conflicts.
A significant practical reason was the desire for religious refuge, exemplified by the Mormons. After their founder Joseph Smith's murder, Mormons migrated to the Utah territory, then Mexican territory, led by Brigham Young, to practice their religion freely. By 1847, approximately 16,000 Mormons had settled near the Great Salt Lake.
A growing interest in trade with Asian countries, particularly after a decline in trade with China, also drove expansion. In 1854, Commodore Matthew Perry used a fleet of warships to force Japan, which had been closed to foreigners for 200 years, to open two ports for limited trade with the United States.