USA HISTORY

Detailed explanation-1: -Many Southerners realized that they would lose the tie in free and slave states in the United States Senate that had been maintained since the passage of the Missouri Compromise in 1820. For this reason, they refused to support California’s admission to the Union.

Detailed explanation-2: -In 1849, Californians sought statehood and, after heated debate in the U.S. Congress arising out of the slavery issue, California entered the Union as a free, nonslavery state by the Compromise of 1850. California became the 31st state on September 9, 1850.

Detailed explanation-3: -The Treaty of Guadalupe Hidalgo, which brought an official end to the Mexican-American War (1846-48), was signed on February 2, 1848, at Guadalupe Hidalgo, a city to which the Mexican government had fled with the advance of U.S. forces.

Detailed explanation-4: -Those Southerners who valued slavery more than their country; however, tended to be upset about the compromise because it held out the possibility that slavery’s expansion wasn’t guaranteed in the future.