Need help please and thanks so much for your help

the first picture is for the question 8 , the second picture is for question 9 and there'd picture is for question 7 hope its helpful and good luck.

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.