How did life change in the Mexican borderlands over the course of the

How did life change in the Mexican borderlands over the course of the second half of the nineteenth century? How did the Mexicano community on the American side of the border respond to these changes?

What will be an ideal response?

ANSWER
Key Points: Treaty of Guadalupe Hidalgo; relations between Mexicanos and Anglos; the Mexican elite; the impact of the commercial economy and the expanding network of market relations; Mexicano resistance