Genuinely want others opinions. Also, please explain why. Thank you!

This cartoon appeared in 1916. the topic of the cartoon isa)the reason for the start of world war i.b)the success of us submarines in world war i.c)the military alliance between germany and mexico.d)the attitude in the us towards submarine warfare in world 

On this map which states would the tropic of cancer run through

Perculiarity of globalization for the global economy