Christianity was the most powerful religion during that time. During the scientific revolution the power of the church weakened as science became an actual field. Less people started believing in the church teaching as it didn't match with the scientific discoveries at that time
Hope this helps !
This is a bit complicated:
Cuba was under Fulgencio Batista's reign by the time of Castro's rise. Cuba was a capitalist country at that point that was basically the US' puppet. Fidel Castro and his "guerrillas" were obviously against the system that was being employed for many reasons. I believe one of the main reasons was that Batista's Cuba was a corrupt one. There were many under-the-books assassinations just because they were a threat to Batista, etc. Overall, Cuba was a very corrupt and injust country at that point and that is why Fidel decided to fight against it, beginning with the "27 de julio movement" alongside Ernesto "Ché" Guevara.
The Ottoman economy was disrupted by inflation, caused by the influx of precious metals into Europe from the Americas and by an increasing imbalance of trade between East and West.
Answer:
Obstacles:
1.The sea, america would normally be hard to access for non-mexican immigrants due to the wide ocean blocking their way. They often take this dangerous journey across as they have no other choice.
Pull factors:
1.For most non-americans (like me), the country would probably be fantasized and thought to be a great modern country full of amazing opportunities. This may make them wish to immigrate to America.