USA HISTORY

Detailed explanation-1: -In 1821, Mexico gained independence from Spain after the brutal and destructive Mexican War for Independence . Its territory included much of the former New Spain, including Spanish Texas.

Detailed explanation-2: -Texas was annexed by the United States in 1845 and became the 28th state. Until 1836, Texas had been part of Mexico, but in that year a group of settlers from the United States who lived in Mexican Texas declared independence.

Detailed explanation-3: -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.

Detailed explanation-4: -With the support of President-elect Polk, Tyler managed to get the joint resolution passed on March 1, 1845, and Texas was admitted into the United States on December 29.