Her paper focuses on which major historical theme

i dont really know if this is a multiple choice but i think i have done this one and i got

C.Creation, expansion, and interaction of political systems

A

Explanation:

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.