Answer:
Irrigation is the spreading of water over crops for the purpose of farming. The way it's done can vary, but its general use is as described above. Sprinklers and aboveground canals are two examples of it.
Answer: C. High crop yields on fertile floodplains permitted more people to pursue non-farming activities. d People stopped conducting warfare on neighboring groups.
Answer:
according to https://en.wikipedia.org/wiki/Christianity_in_Ethiopia Frumentius returned to Ethiopia, he was welcomed with open arms by the rulers who were at the time not Christian.
Explanation:
