To put it shortly, the answers are C, D, E, and F.
With C. being "Increased Immigration",
D. being "The desire for adventure/land/riches",
E. being "The Discovery of gold", and
F. being "The Homestead Act".
Hope this helps :)
Answer:
The most valuable resources on the Caribbean islands are zinc, manganese, coconuts, and climate beaches
Explanation:
I'm from Somewhere. I guess.
Spain
Here's an article going in-depth: https://history.house.gov/Exhibitions-and-Publications/APA/Historical-Essays/Exclusion-and-Empire/The-Philippines/
To be honest I'm not that good at explaining things when it comes to history :)
mountains