Which may have been a reason for the decline of civilization in the indus valley? (a) major sandstorms destroyed the crops. (b) unrelenting wars destroyed the villages. (c) disease destroyed much of the population. (d) craftsmen and laborers could no longer make a living.

This photo shows an early mesoamerican structure, specifically from the zapotec culture. what was this structure most likely used for? a.creating terraces for farm fieldsb.practicing religious ceremoniesc.playing a ball game with stone hoopsd.protecting a city from invading armies