One reason offered for the expansion of the Inca state was
(A) a need for humans to sacrifice to the state gods.
(B) overpopulation and the need for new crop land.
(C) each new Inca ruler had to secure new land and wealth for himself.
(D) changing environment and climate that drove the Incas from their homeland.
(E) superior technologies made it easy for the Incas to conquer other peoples.
Answer: C