The growing societal and economic unrest of the late-1800s was most influenced by
a. the much-disputed result of the presidential election in 1877.b. popular resistance to the idea of going to war with spain over cuba. c. a widening income gap between industrial laborers and factory bosses. d. the federal government's decision to end its use of the gold standard.

The growing societal and economic interest was most influenced by the widening income gap between industrial laborers and factory bosses.

Explanation:

In the late 1880's and 1890's the government the American economy fell down precipitously. Farmers struggled a lot due to the economic depression and the whole country followed later on.one of the reasons for this cause was the investment of banks in railroad bonds.Depression of 1893 was manifold. Rapid proliferation of railroad lines resulted in creation of false growth for the economy.Investors and banks invested in a scheme that they never realized that  it was built on a bubble.Unemployment increased from 3% to 19% within a very short period of time.By 1895 due to the economic depression of the 1890's , Americans were used to seeing people homeless on the streets.

Marshall plan is the answer.