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.
Answer:
Because it was a part of the past and it had alot of meaning to them.
