How the Mexican-American War Supported Polk's Presidential Promises
What was the outcome of the Mexican-American war and how did it support Polk's presidential promises?
A. Following the Mexican-American war, Texas remained a part of Mexico.
B. As a result of the Mexican-American war, slavery was outlawed in western territories.
C. Following the Mexican-American war, northerners began to embrace the institution of slavery.
D. As a result of the Mexican-American war, slavery was allowed to expand into western territories.
Answer:
The outcome of the Mexican-American war supported Polk’s presidential promises by adding new territories to the United States where slavery was allowed to expand.
The statement that best describes how the outcome of the Mexican-American war supported Polk’s presidential promises is 'As a result of the Mexican-American war, slavery was allowed to expand into western territories'.
President James K. Polk was in office during the Mexican-American War (1846-1848) and was a strong supporter of the doctrine of Manifest Destiny, which included the expansion of slavery into new territories.
Before his presidency, Polk promised to annex Texas, which at the time was a slave state, and acquire the territories of California and New Mexico from Mexico. The Treaty of Guadalupe Hidalgo, which ended the Mexican-American war, fulfilled these promises by adding these territories to the United States where slavery was allowed to expand.