Expansion
This 1803 deal doubled U.S. size.
Louisiana Purchase
This war (1846–1848) added vast land to the U.S
Mexican-American War
He was the president that made the Louisiana Purchase
Thomas Jefferson
This region was most industrialized and had lots of immigrant wage laborers
The North
This 1820 agreement admitted Missouri as a slave state and Maine as free
Missouri Compromise
This expedition mapped western lands and strengthened U.S. claims
Lewis and Clark Expedition
This river was the disputed Texas border
Rio Grande River
He opposed the Mexican-American War as unjust aggression and became the first Republican president
Abraham Lincoln
This region depended most on slavery
The South
California was admitted to the Union as a free state as part of this compromise
Compromise of 1850
This belief justified U.S. expansion across the continent
Manifest Destiny
This 1848 treaty ended the Mexican-American War
Treaty of Guadalupe Hidalgo
This senator proposed a compromise to ease sectional tensions in 1820
Henry Clay
This machine made refining raw cotton much faster, increasing reliance on slavery
the cotton gin
This practice was banned in Washington DC as part of the Compromise of 1850
The slave trade
This 1846 agreement settled the Oregon boundary at the 49th parallel
Oregon Treaty
This proposal tried to ban slavery in new territories from Mexico
Wilmot Proviso
He led U.S. forces in the Mexican-American War and became president
Zachary Taylor
This law returned escaped enslaved people to owners
The Fugitive Slave Law of 1850
This was the second largest acquisition of land in US history
The Mexican Cession
This 1819 treaty gave the U.S. Florida
Adams-Onis Treaty
This future state became a flashpoint over slavery after the Mexican American war
California
This president strongly supported Manifest Destiny and war with Mexico
James Polk
This political party rose in opposition to the expansion of slavery
Free-Soil Party
Kansas Nebraska Act implemented this philosphy regarding slavery in those territories
Kansas Nebraska Act