Ang ay mga uri ng mamamayan na malalim ang pagsusuri sa mga sanhi ng kasalukuyang kalagayan ng lipunan. *

How did inca develop their road system? a) they used mortar to hold the stones together. b) they built suspension bridges over rivers. c) they mixed copper and stone together to make the blocks. d) they laid roads in the cities, not in the less densely populated deserts.

According to the article, what did plato and aristotle have in common?

West africans received salt from who?