What brought about the rise of the Populists? reduced levels of segregation
the decline of the Republican Party
economic challenges faced by farmers
industrialization in rural areas

industrialization in rural areas

Explanation:

in the early period of industrialization, the treatment that's given by factory owners to the workers were very inhumane. They were forced worked in unsafe environment for long hours with very little pay.

This caused the common people to start growing resentment toward both the government and business owners.

The populists movement started to rise during this period. This party advocated for the creation of policies that benefited the common workers (such as Increasing taxes for big businesses, cheaper methods of transportation for farmers, increased money supply for poor workers, etc)