The income divide and excesses of the rich during the gilded age caused

people to work for economic and social reform.

Explanation:

The Golden Age was an era of rapid economic growth, especially in the north and west. As American wages were much higher than those in Europe, especially for skilled workers, the period saw an influx of millions of European immigrants. The rapid expansion of industrialization led to real wage growth of 60 percent between 1860 and 1890, scattered by the ever-increasing workforce. The average annual salary per industrial worker (including men, women, and children) rose from $ 380 in 1880 to $ 564 in 1890, a gain of 48 percent. However, the Golden Age was also a time of extreme poverty and inequality, as millions of immigrants - many from impoverished regions - arrived in the United States, and the high concentration of wealth coupled with the precarious division of income, became more visible and contentious.

Because of the unfair division of income and the excesses of the rich during some people working for economic and social reforms. An example of this was the emergence of labor unions.  

Labor unions, such as carpenters, printers, cobblers, and cigar makers, grew steadily in industrial towns after 1870. These unions used frequent short-term strikes as a method of gaining control over the labor market and fighting against competing unions.

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explanation:

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thurgood marshall

explanation: in 1954, thurgood marshall and a team of naacp attorneys won brown v. board of education of topeka, kansas. in this landmark decision, the supreme court held that segregation in public education violated the equal protection clause of the fourteenth amendment.