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Louisiana Purchase
- The United States acquired approximately 828,000 square miles of land from France, doubling the size of the nation.
- This event supports the idea of inevitable expansion as it provided vast new territories for settlement and agriculture, setting a precedent for further expansion.
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Lewis and Clark Expedition
- Commissioned by President Jefferson, the expedition mapped the western territories and established American presence.
- The exploration and mapping of the western lands demonstrated a national intent to expand and claim new territories.
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Missouri Compromise
- Legislation that admitted Missouri as a slave state and Maine as a free state, maintaining the balance of power but also opening the western territories to expansion.
- This event shows that political mechanisms were put in place to manage expansion, indicating that westward movement was seen as a natural progression.
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Indian Removal Act
- Signed by President Andrew Jackson, this act led to the forced relocation of Native American tribes to lands west of the Mississippi River.
- The removal of Native Americans facilitated American settlement in the west, suggesting that expansion was pursued aggressively by the government.
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Oregon Trail Migration
- Thousands of American settlers traveled the Oregon Trail to settle in the Pacific Northwest.
- The mass migration to Oregon highlights the strong desire and determination of Americans to move westward, driven by opportunities for land and prosperity.
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Texas Annexation
- Texas joined the United States after gaining independence from Mexico.
- The annexation of Texas reflects the expansionist mindset and the belief in Manifest Destiny, reinforcing the idea that westward expansion was inevitable.
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California Gold Rush
- The discovery of gold in California attracted hundreds of thousands of settlers.
- The rapid population influx into California demonstrates that economic opportunities were a major driving force behind westward expansion, further supporting its inevitability.