Contextualize the prompt: Analyze the immediate causes of The Civil War.

Slavery

The burning issue that led to the disruption of the union was the debate over the future of slavery. That dispute led to secession, and secession brought about a war in which the Northern and Western states and territories fought to preserve the Union, and the South fought to establish Southern independence as a new confederation of states under its own constitution.

The immediate cause was slavery. The north wanted to abolish it meanwhile the south wanted to keep the slaves.