Because it involved countries all over the world, there was new technology such as chemical warfare, tanks, planes, etc. and it was unrestricted warfare. The countries were attacking civilians as well. Also there were diseases.
The major trade region did the United States aim for while developing a larger navy is the United State Army. The United States Army is the largest branch of the United States Armed Forces and performs land-based military operations. Hope it helps.
Answer:
It was all foreign powers to have the same chance to trade with China.
D. The Soviet Union and Chinese helped Korean communists gain power in the north.
Answer:
try a or b I don't know if I'm right
