Which term best describes the Progressive Era? a. socialist party

b. political party

c. abolition

d. grass-roots movement

d. Grass-Roots Movement.

Explanation:

The Progressive Era was a period of the US history of social and political reforms to address issues from industrialization, urbanization, immigration and corruption, which was led by citizens and politicians in favour of the Progressive agenda. The measures applied were Government reforms, the establishment of food and work laws, as well as the legalization of labor unions, amongst others.

b political party

this movement was considered political because of the proggression in this era.