Can't really make out what you're saying, here. What is UD? Mexico didn't exist; it was a Spanish colony subject to unstable governance, which is why, for example, Texas gained independence from Mexico in the same way Mexico gained independence from Spain. When were the settlers slaughtering each other? Not all Native Americans were slaughtered. Far from it. I am, for example, myself part Choctaw and Cherokee, native to the area in which I was born, unlike Spaniards and Mexicans.