Answer:
Tsunamis are formed by earthquakes and the disturbance in the middle of the Pacific Ocean. Fortunately, most of the time, they do not reach land.
I think the two sources would be drip irrigation which is like a river, lake, groundwater, etc... The second source could be is making a new irragation system that could deliver water faster.
Answer:
Hey! Your answer should be B. Imperialist