It prolonged the war because once they dug in they would slowly move forward every few days. It also kept them from having more head on conflicts and doing so prolonged the war effort.
The answer is D, the US constitution. You must be in Texas History, I’m sorry. It sucks.
Answer:
In the late 19th century, there was also growing support for the idea that the United States had a special mission to lift up "backward" people around the world. Mainstream Protestant denominations established religious missions in Africa and Asia, and by 1890 there were 500 missions in China.