The most economic event was the civil war i hope this helps
D or C not sure but i hope it works lol
The Answer you are looking for is B).
If you look back at WWII the way the U.S. ended the war was with a plane dropping the 2 atomic bombs on Japan. So I think that the "use of air-power" did more than a little to help change the way the war was fought.
Answer: The 15th amendment prevents the government from not allowing one to vote because of race, gender, age etc. ( in other words prevents discrimination and gives everyone voting rights)
Explanation: