What was the populist movement?

Populist Movement, in U.S. history, politically oriented coalition of agrarian reformers in the Midwest and South that advocated a wide range of economic and political legislation in the late 19th century.

Explanation:

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.

the structure of state governments are determined by. "state constitutins'

under the us constitution, all state governments are.'republics'