What was one of the main goals of progressive reformers during the early twentieth century? A. ensuring the country returned to isolationism

B.
expanding US influence through imperialism

C.
limiting government interference in the economy

D.
addressing the negative effects of industrialization

D.  Addressing the negative effects of industrialization

Explanation:

The era of Progressivism, which began in the second part of the 19th century, continued into the twentieth century. During that period, many problems that were current in American society were tried to be solved. The industrialization has brought with it some negative phenomena such as child labor and poor conditions for workers. These are some of the problems that have been sought to be addressed. The period was also characterized as the fight against corruption. The government has dealt with corrupt individuals and groups in government itself but also in industry. There were many corrupt industrialists and their assistants who put workers in a difficult position for their interests.

i believe the answer is:

-   william jennings bryan is a democrat while mckinley was a republican

at that time, the segment of population that choose for democratic party were the voters with low economic background and vice versa

- william jennings has support of populists and wants to have inflation to farmers while mckinley has support of bankers and businessmen , doesn't want inflation

the fixed value of gold make the large business able to stack up their gold without   being worried that it would devaluated.

- william jennings supported the silver standard while mckinley supported the gold standard

according to jenning, using other metal beside gold could the poor people to have more purchasing power and them advance in the society.