How did trench warfare affect the war?
a. flooding in trenches caused more deaths than battles did.
o
b. major battles caused only a few casualties,
o
c. major battles gained a lot of ground.
d. major battles gained little or no ground,

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.

yup! you are correct it is b.

a because i tried to vote with just my college id and the answer was no