First completed in 1795 to connect Philadelphia and Lancaster, Pennsylvania, this private toll road sparked a nationwide boom in early 19th-century infrastructure.
Turnpike
Though masked by underlying tensions over tariffs, the national bank, and slavery, this ironic phrase describes the period of single-party rule during James Monroe's presidency following the collapse of the Federalists.
"Era of Good Feelings"
Members of this antebellum reform movement, such as William Lloyd Garrison and Frederick Douglass, advocated for the immediate and uncompensated emancipation of enslaved individuals.
Abolisitionists
This term describes the 19th-century politicians and citizens who strongly advocated for growing the nation's borders, driving policies like the annexation of Texas and the acquisition of the Oregon Territory.
Though this San Antonio mission fell to Mexican forces in 1836, the deaths of its defenders, including Davy Crockett, became a legendary rallying cry for Texas independence.
The Alamo
Driven by an influx of Irish and German immigrants in the 1840s and 1850s, this group of Americans formed organizations like the "Know-Nothings" to protect native-born political power and wage labor.
Nativists
Known as the "Great Compromiser," this Whig statesman brokered the Missouri Compromise, the Nullification Crisis compromise tariff, and the Compromise of 1850 to stave off civil war.
Henry Clay
He was a famous escaped slave who became one of the most powerful speakers and writers in the movement to end slavery.
Frederrick Douglass
This influential columnist and editor is famous for coining the phrase "Manifest Destiny" in 1845 to argue that the United States had a divine right to expand across the continent.
John O' Sullivan
This president provoked war with Mexico by ordering U.S. troops into the disputed border region between the Nueces River and the Rio Grande shortly after Texas was annexed.
James K. Polk
By freeing manufacturers from their geographic dependence on rapidly moving water, this innovation allowed 19th-century textile mills and factories to relocate directly to major urban centers.
Steam Engine
This 1823 foreign policy statement warned European powers against further colonization in the Western Hemisphere, establishing a cornerstone of American isolationism.
Monroe Doctrine
He was a famous white abolitionist who published a well-known anti-slavery newspaper called The Liberator.
William Lloyd Garrison
These rugged, independent fur trappers and explorers roamed the Rocky Mountains in the 1820s and 1830s, blazes trails that later guided thousands of pioneer settlers moving west.
Mountain Men
Before becoming president, this general was ordered by James K. Polk to deploy his troops to the disputed Texas border along the Rio Grande, where a skirmish with Mexican forces sparked the Mexican-American War.
Zachary Taylor
Coined by Senator James Henry Hammond in 1858, this two-word slogan asserted that the economic dominance of the South's primary cash crop would force Great Britain to support the Confederacy.
"King Cotton"
Signed by Andrew Jackson in 1830, this legislation authorized the federal government to negotiate land-exchange treaties, ultimately forcing tens of thousands of Native Americans westward.
Indian Removal Act
She was a leading women's rights activist who helped organize the Seneca Falls Convention and wrote the "Declaration of Sentiments."
Elizabeth Cady Stanton
Founded by Joseph Smith and later led by Brigham Young, this religious group fled intense persecution in the East and Midwest to establish a thriving community near the Great Salt Lake in 1847.
Mormons
Just weeks after the fall of the Alamo, Mexican forces executed over 300 Texas prisoners at this site, inspiring the dual rallying cry: "Remember the Alamo, Remember ______!"
Goliad
Eli Whitney popularized this system while manufacturing muskets for the U.S. Army, a breakthrough that revolutionized mass production and reduced the need for skilled artisans.
Interchangable parts
This major financial crisis, triggered by the Specie Circular and the collapse of the "pet banks," led to a deep economic depression during Martin Van Buren's presidency.
Panic of 1837
Stretching over 2,000 miles from Missouri to the Willamette Valley, this major emigrant route was used by hundreds of thousands of pioneers in the 1840s and 1850s seeking fertile farmland in the Pacific Northwest.
Oregon Trail
Introduced during the Mexican-American War sparked by Texas's border dispute, this controversial 1846 proposal sought to ban slavery from any territory acquired from Mexico, igniting a fierce sectional debate.
Wilmot Proviso