the Gadsden Purchase and the withdrawal of Spain from Mexico
Due simply to the fact that it was their native land they were fighting on. Whereas the colonist they were fighting were new to the lands and not yet fully acclimated.
to Revise the Articles of Confederation.
The cattle boom led to economic prosperity for the rise, growth, and development of new towns in the west resulting to the development of service businesses, for example, hotels, salons, e.t.c. The cattle were bought cheap and resold at high prices which allowed the ranchers to make a lot of money (profit).