Answer:
France, Britain and Spain, but I'm sure there were others too
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 historians generally 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.
They wanted them to adapt Democracy. (Because the US was a democracy)
A. Such a class you must have, or you would not have that other class which leads progress, civilization, and refinement.