USA HISTORY

Detailed explanation-1: -As settlement expanded, the U.S. government forced Native Americans off their lands and onto reservations. Early statehood also saw a rapid expansion of the African-American population in Texas. The vast majority continued to live as slaves. Annexation inflamed tensions with Mexico.

Detailed explanation-2: -On December 29, 1845, Texas became the 28th state in the United States. Formerly part of Mexico, Texas had been an independent country since 1836. Since its independence, Texas had sought annexation by the U.S. However, the process took nearly 10 years due to political divisions over slavery.