Why were Europeans able to take over the Americas in the 15th,16th, and 17th centuries?

Which statement is true of both presidential and parliamentary systems of government?

Look at the graph. where p is price and q is quantity, what might cause a move from b to a?

Plz where was the inca civilization located? a. in and around the andes mountains of south america. b. central america in southern mexico. c. the caribbean islands. d. the central valley of mexico.