The roots of the radical progressive movement can be traced to (which movement?) and the ideas of (who?)

Answer 1

The roots of the radical progressive movement can be traced back to the Progressive Movement of the late 19th and early 20th centuries. The ideas that influenced this movement were largely shaped by figures such as Upton Sinclair, Jane Addams, and Theodore Roosevelt. These individuals advocated for various reforms, including labor rights, women's suffrage, social justice, and government regulation to address the social issues of the industrial era.