When Texas got its independence from Mexico in 1836, it wanted to join the United States as a state. However, Texas didn’t become a state until December 29, 1845. There were a few reasons for this long delay.
One reason centered on the issue of slavery. There had been a balance between free states and slave states in our country. Northerners were against the annexation of Texas because it would have given the South another slave state. The Northerners were concerned this would allow for pro-slavery policies and laws to be developed and passed in our country.
There was also some concern that annexation Texas immediately could have led to war with Mexico. The Mexican government didn’t officially recognize Texas as an independent nation. Santa Anna agreed to give Texas its freedom in exchange for his release, but the full government didn’t officially acknowledge the status of Texas as an independent country. Thus, there was some concern that the annexation of Texas could possibly lead to a war with Mexico.
As a result, Texas was an independent republic, called The Lone Star Republic, from 1836-1845.