"To accommodate for lack of dependable rainfall" would be the best option as to why the ancient Chinese organized large groups of people to build and maintain irrigation systems, since when rainfall would not come for long periods of time, the crops would likely die without proper irrigation.
B) imports
The Townsend acts taxed imports, such as tea, they wanted to receive revenue from colonists.
King George quite literally represents king george
It was in the city of "A. Geneva, Switzerland" that the World Disarmament Conference of 1932 was held, since Geneva has a long history of being a "neutral" city.
