A C and D. It cannot be b because scientists have warned people in the past about volcanoes and their possibility for erupting. Earthquakes cannot be predicted however there are warning signs one can look for.
Idk go on google in find out
Answer:
Spain
Explanation:
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 :)