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6-1: Territorial Expansion

Explore the significant events and acquisitions that led to the expansion of the United States in the 19th century, including the Louisiana Purchase, Texas Annexation, Mexican American War, California Gold Rush, Gadsden Purchase, Oregon Dispute, and acquisitions of Alaska, Florida, and Hawaii.

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6-1: Territorial Expansion

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  1. 6-1: Territorial Expansion • Louisiana Purchase- France wanted to sell it to the U.S. for $15 million. • The Louisiana Territory would double the size of the U.S. and give us control over the Mississippi River • Controversial Issue- no place in the Constitution allowed the president to buy the land

  2. U.S. Territory-1800

  3. Louisiana Purchase

  4. Jefferson changed his views from strict constructionist to loose b/c it benefited the country • U.S. acquired the land and sent out the Lewis & Clark Expedition • Frontier- name give to the unsettled territories out west. Closed in 1890 • Manifest Destiny- desire to control all of the land from the Atlantic to the Pacific. Led to U.S. expansionism for the rest of the 1800s

  5. Texas Annexation • Texas territory was controlled by Mexico but many of the inhabitants were Americans who owned slave • 1836 Texas wins its independence and is a free country from 1836-1845 • Texas is peacefully annexed (taken over) by the U.S. in 1845 by Pres. Tyler

  6. Annexation of Texas

  7. Mexican American War 1846-48 • Mexico was upset by losing Texas and Americans wanted to fulfill their Manifest Destiny desire • Pres. James K. Polk was an expansionist and went to war with Mexico • U.S. wins the war and pays $15 million for the Mexican Cession.

  8. Mexican Cession

  9. Gold Rush • 1848 Gold was discovered at Sutters Mill in California which led to the Gold Rush of 1849. • Thousands of Americans and Asians begin to flock to California • Gadsden Purchase- U.S. paid $10 million for small strip of land along Mexico for a Southern Transcontinental RR

  10. California Gold Rush

  11. Gadsden Purchase

  12. Oregon Territory • U.S. and GB had shared the territory • 1840s both countries claim to own more land than the other • “54-40 or Fight”- became a battle cry to go to war over the area • 1846 Settle set a dividing line along the 49th Parallel

  13. Oregon Dispute

  14. Alaska (1867), Florida (1819) and Hawaii (1898)

  15. United States Today

  16. U.S. Expansionism • U.S. drastically increased its size during the 1800s • U.S. acquired territory through treaties, purchases, annexation and war

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