Answer:
Political Corruption
Explanation:
The four major goals of Progressives is widely known to be the means to solve the issue of industrialization, urbanization, immigration, and political corruption.
Of all these major goals, the issue of Political Corruption was the hardest goal to accomplish by reformers.
This evident in the fact that one of the ways reformers strive to end political corruption is through a system. of meritocracy as against the spoil system.
However, at the grassroots level, the corrupt politicians still hold political offices thereby making the political corruption last longer. This can be seen in cases like the corruption of the Tammany Hall ring, which lasted till around the 1930s despite the state of New York carrying out reforms earlier.
Similarly, political corruption continues in Chicago till around the 1970s despite the state of Illinois reforming its civil services as far back as 1917.
