Which of the following would be a considered a pull factor that would encourage a person to consider migrating to a new country?
a civil war
b foreign rule
c industrial jobs
d low wages

Your answer will be industrial jobs. It's the only logical answer as of now.

They migrated for a lot of reasons. Either they weren't happy with their economy, or the laws. Your biggest bet is the Industrial Jobs. But of course, this depends on what point in history. 

Conflicts arising from drug cartels and goverment corruption is an issue that would most likely be considered as mexico's most challenging problem of today. the correct option among all the options that are given in the question is the third option or option "c". this problem has continued for a very long time.

This could be considered an example of astrology.