Who is Santa Anna from Sam Houston and the American Southwest and what is their importance?

Santa Anna was a military general who violently seized dictatorial power within Mexico. Santa Anna personally led armies into Texas after the Anglos there declared their independence. Houston defeated Santa Anna at the battle of San Jacinto. David G. Burnet then negotiated the Treaty of Velasco with Santa Anna, allowing him to return to Mexico, where he again seized power and tried a weak invasion of Texas a few years after that.