American Civil War

Follow the story · Four stages

1. 01

   Background

   Political compromises over slavery's expansion broke down, and southern states seceded after Lincoln's election. The defense of a social order dependent on enslaved labor collided with the survival of the Union and led to armed conflict.

   • The expansion of slavery into western territories repeatedly reopened conflict between free and slave states.
   • The Compromise of 1850 and later political settlements delayed a rupture without resolving the status of slavery.
   • After Abraham Lincoln's election, eleven Southern states seceded and formed the Confederacy.

   
2. 02

   Course

   The conflict expanded from Fort Sumter into mass war as Union campaigns divided the Confederacy. Harriet Tubman served as scout, nurse, and raid leader; Frederick Douglass pressed for emancipation and Black enlistment and negotiated with the president.

   • Fighting began in 1861 and grew into a mass war of armies, railroads, industry, and civilian resources.
   • The Emancipation Proclamation made freedom a Union war aim, while Black men entered Union service in large numbers.
   • Union victories at Gettysburg and Vicksburg in 1863 shifted the military balance, but costly campaigns continued for two more years.

   
3. 03

   Outcome

   Union victory preserved the country. Wartime emancipation was followed by the Thirteenth Amendment's constitutional abolition of slavery and the beginning of Reconstruction, but land, racial violence, and equal citizenship remained unresolved.

   • Confederate armies surrendered in the spring of 1865, preserving the United States under federal authority.
   • The Thirteenth Amendment abolished slavery throughout the country later that year.
   • The war left enormous loss of life and widespread destruction, especially across the South.

   
4. 04

   Historical significance

   The war preserved the Union, ended legal slavery, and transformed federal authority and citizenship. Reconstruction's defeat and the reorganization of white supremacy left a deep gap between emancipation and equality.

   • Reconstruction attempted to rebuild Southern governments and define freedom, citizenship, and voting rights after slavery.
   • Harriet Tubman aided the Union as a nurse and scout, while Frederick Douglass pressed for emancipation and Black enlistment.
   • Abolition transformed the Constitution, but racial equality remained contested and incomplete.