8.2 Causes of the Civil War Slavery:"You think slavery is right and ought to be expanded;while we think it is wrong and ought to be restricted.That I suppose is the rub."(Lincoln to a friend) Political system:The ceaseless Constitutional disputes between Republicans and Southerners over the nature of the Federal Union and states'rights inflicted wounds in their heart. Economic differences:between the industrializing North and the agricultural South.8.2 Causes of the Civil War • Slavery: “You think slavery is right and ought to be expanded; while we think it is wrong and ought to be restricted. That I suppose is the rub.” (Lincoln to a friend) • Political system: The ceaseless Constitutional disputes between Republicans and Southerners over the nature of the Federal Union and states’ rights inflicted wounds in their heart. • Economic differences: between the industrializing North and the agricultural South