Immigration, American Policy, and Foreign Policy.
Answer:
Bracero
Explanation:
Bracero (manual labor) program.
The answer is because in urban areas there are more industrial jobs
Las sociedades feudales eran sociedades estamentales. Estas presentaban 3 estamentos: nobleza, clero y el pueblo.
1. gulf of tonkin incident
2. truman doctrine
3.containment of communism
probably a little off but it'll lead you in the right direction.
(I was literally learning this a couple months ago and my memory is a little rusty)