Why were Indians/native people not benefitting from the changes in Mexico?

Because the natives are minority in Mexico and the changes were not made for their benefit.

interest groups send representatives to state capitals and to washington, d.c. to put pressure on members of congress and other policymakers. they engage in lobbying, or the organized process of influencing legislation or policy. lobbying can take many forms. interest groups can testify in congressional hearings.

it was bribing i think i might be wrong though