American Civil War
The American Civil War was one of the earliest true industrial wars. Railroads, the telegraph, steamships, and mass-produced weapons were employed extensively. The mobilization of civilian factories, mines, shipyards, banks, transportation and food supplies all foreshadowed the impact of industrialization in World War I. It remains the deadliest war in American history, resulting in the deaths of an estimated 750,000 soldiers and an undetermined number of civilian casualties.[N 2] One estimate of the death toll is that ten percent of all Northern males 20–45 years old, and 30 percent of all Southern white males aged 18–40 died. From 1861 to 1865 about 620,000 soldiers lost their lives. Causes of secession Slavery To settle the dispute over slavery expansion, Abolitionists and proslavery elements sent their partisans into Kansas, both using ballots and bullets. States' rights Main article: States' rights Sectionalism and cotton trade Status of the states, 1861. Territories Protectionism Ft.