SAT World History

CC_Admin
Sat, 04 Jun 2005 20:19:44 +0000

Both naturally irrigated areas and stable sources of fresh water were very hard to find outside of a river. If “irrigation” and “drinking water” were two distinct and exclusive responses, then I’d have to pick irrigation. If they were both contained within one answer, that answer is obviously correct.

They’re both very essential pieces to the puzzle of why civilizations were typically centered in river valleys.