1. which was a first step in the development of civilizations in both the egyptian and mesopotamian societies? a. switch to monotheism b. development of irrigation c. overthrow of a government d. pastoral behavior 2. which river is associated with the settlement of ancient egypt? a. ganges b. tigris c. nile d. yellow 3. who was the most powerful person in egyptian society and government? a. the priest b. the scribe c. the vizier d. the pharaoh e. quest