Lamar wanted the Rio Grande to be the western boundary of Texas. He wanted to send an expedition to New Mexico to conquer it, and convince the residents, still loyal to Mexico, to join the Republic. The Texas Congress refused to fund the expedition in 1839 and 1840. Did JonesRead More →

The main reason for this was slavery. The US did not want to annex Texas because doing so would have upset the balance between slave states and free states that had been accomplished with the Missouri Compromise of 1820. When Texas became independent, it wanted to join up with theRead More →