Before the Dust Bowl era, farmers had failed to rotate crops or , which contributed to severe topsoil erosion in the Great Plains. a.
plant windbreaks
b.
store enough groundwater for irrigation
c.
establish early farm relief organizations
d.
fertilize farmland

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.

increase in population