What 1803 purchase doubled the size of the United States?
What phrase described America’s belief that it was destined to expand west?
Manifest Destiny
Who led the expedition to explore the Louisiana Territory in 1804–1806?
Lewis and Clark
Name one impact of westward expansion on Native Americans.
What is loss of land, forced removal, or cultural disruption?
Give one modern example of expansion beyond land.
What is space exploration?
What treaty ended the Mexican-American War and gave the U.S. the Mexican Cession?
Treaty of Guadpula of Hidpula
What word means “to formally add land to a country”?
Annextation
What 1849 event led thousands of Americans to California for riches?
Gold rush
How did expansion affect the balance between free and slave states?
It created conflict over whether new states would be free or slave.
How does urban sprawl resemble westward settlement patterns?
Both involve expanding into new land and pushing out existing communities.
What land purchase added territory in 1853 to allow a southern railroad route?
Gadsden's Purchase
What act gave settlers free land if they lived on and improved it?
Homestead Act
What 1830 law authorized the removal of Native peoples from the Southeast?
Indian Removal Act
What industry grew because of access to western resources and land?
Railroad Industry
Name one modern conflict over land that echoes historical land struggles.
Examples: oil pipelines (Standing Rock), deforestation, water rights.
Which territory was jointly occupied by Britain and the U.S. before the 1846 treaty?
Oregon Territory
What idea argued that the frontier shaped American democracy and identity?
Frontier Territory
Who was the U.S. President during the Mexican-American War?
James K. Polk
What environmental impact occurred on the Great Plains due to settlement?
What is the destruction of the buffalo or ecosystem changes?
How is today’s immigration debate connected to themes from westward expansion?
Both involve movement, opportunity, and conflict over who controls land.
What idea later justified U.S. political and military influence in the Western Hemisphere?
Monroe Doctrine
What term describes the forced relocation of Native American nations?
Removal
What war did the U.S. fight in the 1840s to gain land in the Southwest?
Mexican-American
Give one long-term effect of westward expansion on the shape of the U.S.
It established the continental U.S. borders as we know them today.
How does settlement and displacement still affect Native communities today?
Examples: land rights issues, poverty, loss of resources, political fights over sovereignty.