- Theme > Expansion and Imperialism (x)
- Historical Eras > Antebellum America (1816-1860) (x)
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Mexico's President Herrera Decries the Annexation of Texas
In March 1845, shortly before leaving office, President John Tyler signed a Joint Resolution of Congress offering to annex the Texas Republic to the United States. Mexico, which had never recognized the Republic and still claimed Texas as its [...]
The United States Declares War on Mexico
On April 26, 1846, following a tense stand-off between U.S. and Mexican troops on the banks of the Rio Grande (which the U.S. now claimed as its border with Mexico, having annexed the state of Texas), a small patrol of sixty-three U.S. soldiers was [...]
A Mexican General Issues a Proclamation at Matamoros
Before being replaced by General Arista, General Francisco Mejía was the commander of the Mexican army at Matamoros, facing the American forces at Fort Texas on the opposite side of the Rio Grande. In this elaborately-worded proclamation, General [...]
Democrats Outline their 1856 Party Platform
In an attempt to settle sectional conflicts about the expansion of slavery, Congress passed the Kansas-Nebraska Act in 1854. The act stated that the residents of Kansas and Nebraska, rather than the federal government, would determine the legality [...]
The Treaty of Guadalupe Hidalgo Preserves Mexicans' Rights in the Southwest
The Treaty of Guadalupe Hidalgo, which ended the Mexican-American War in 1848, ceded 525,000 square miles--55% of--Mexican territory to the United States. In exchange, the United States paid approximately $15 million in damages to pay for [...]