The reason people immigrate from one country to another is because they might have natural disasters or land and a occupation is hard to find there. So people might just be migrating to find happiness or a better life than what they had.
Well it did a change for the counties but there is one thing that it might of done and that is let all the people come to america early
Austin and the Tejano leaders agreed to a compromise. Because San Antonio de Béxar was the seat of the Department of Béxar
As an actor he spent alot of time there ......
Divergent Evolution would be the answer. Hope I helped!