What challenges did china face during the warring states period

The Fracture of Zhou into Warring States (475–246 BC) During the Warring States Period, nobles stopped supporting the Zhou Dynasty (1046–221 BC), and Zhou's vassal states declared themselves independent from Zhou, becoming kingdoms or warring states. Chu became the biggest state.

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1 and 3

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learned it in 6th

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.