Which is best reflects military force as hard power?

Which of the following factors would be a likely reason for low population density

Which of the following is an example of the pull factor known as economic migration? a. better educational opportunities pulling people towards a new country b. mexican laborers entering the us to work in agricultural jobs c. joining family members that are already in a new country d. crop failures driving people away from their country i am unsure on this question, i was thinking b? but i could be wrong.

Which of the following is not a true statement about the inca? a. they conquered the maya. b. they had a highly organized military. c. they mummified deceased royal-family members. d. they built cities and fortresses on the highlands of the andes mountains.