Answer: B
Explanation: If you want to establish a standard language and religion, you would not want to be part of a big empire.
B. Walter Rauschenbusch
Rauschenbusch was a theologian who wrote Christianity and the Social Crisis in 1907, so that is the correct. Upton Sinclair was a muckraker, who wrote "the Jungle". Jane Addams was a suffragette and Ida Tarbell was another muckraker. So, A, C and D are not correct.
They lived next to water for the convenience of having fresh water for crops, drinking water, and whatever else they use water for.
It also provided as a safe-defense from enemies, because it's harder to ambush a civilization when you have to travel through water.
