Answer:
To intervene in conflicts and prevent war
C, Roaring twenties, due to US prosperity. They had just won a war and moods ran high, leading to excessive parties and consumption of alcohol. Ex. The Great Gatsby
When a society has been radically changed by technology, it has been industrialized. <span />
the use of submarines during WW1 made germany lose
No because it wasn't really supposed to be a war but it ended up being one anyways