The president that spent most of the Treasury's money making improvements, such as modernizing the navy was: B. Chester Arthur
Years after the civil war ended, American navy was left without proper care which lead to the deterioration of its quality.
Chester Arthur saw this as a possible threat if united states somehow have to involved in another war. Based on this concern, he proposed a naval reform to the congress to modernize both the ships and weapons that held by united states' navy.
How did American soldiers influence the war in Europe? They strengthened the Allied counterattacks. They helped spread the war across Europe. They introduced the Big Bertha weapon.
