Because the south wasn't as civilized as the north and relied more on agricultural business and shipping to those in the north so when the war started there was a embargo on any products from both sides
The correct answer is B.World War I
Modernists are a direct response to WWI and many of them such as Hemingway even participated in it.
But at home Japan's failure to gain an indemnity to pay for the heavy war costs made the treaty unpopular .