How did the advantages of the north at the start of the war continue to be advantages?

answer with no fake answers and explain. first person to explain will get the brainlest

the answer is a glaciers carved a large valley that later flooded and became puget sound

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.

the use of email to replace slower surface mail.