A.)federal government increased participation in businesses.
explanation
WW1 was an economic booster for the US and as the war continued in europe the us were thriving in manufactering and profits. The other choives dpmt have any logical reasoning so choice A is best.
Answer:
D. Guidelines for how many people are needed for an area to become a state.
Explanation:
Bc people developed a fear of them and more tasty stuff started appearing everywhere