According to the maps, where did most Confederate victories take place-in the East or the West? Why was controlling the Mississippi River important for the Union?

populist movement, in u.s. history, politically oriented coalition of agrarian reformers in the middle west and south that advocated a wide range of economic and political legislation in the late 19th century. thus in 1892 their leaders organized the populist, or people's, party, and the farmers' alliances melted away.