Anglo Texans (or "Texians," as they were called) a few years later waged war against Mexico in the so-called battle for "Independence" with the idea of preserving slavery in the South. For these reasons and despite its location in the center of the country and its identification as a Southwestern state, Texas is also a Southern state.
So the U.S. owes much to Mexico in the struggle against slavery—and to heroes like Vicente Guerrero and before him, the father of the Mexican War of Independence, Miguel Hidalgo y Costilla who declared an end to slavery much earlier in 1810.
Here is a good link on Texas and slavery: http://en.wikipedia.org/wiki/History_of_slavery_in_Texas
The southern state of Guerrero in Mexico is named after President Vicente Guerrero—and appropriately so since the name means "warrior." As for Guerrero, it has also seen its share of revolutionaries.
There is so much more to this, but this piece is a good start. Important, fascinating history.
Ted Vincent is author of The Legacy of Vicente Guerrero: Mexico’s First Black Indian President, published by University Press of Florida in 2001.