Civil War Movie in 2024

[Old Guy]

The North was industrial, the South agricultural and the country was ruled for protection of industry. Six percent of Southerners owned slaves. The immediate cause of the Civil War was the failure of the North to withdraw troops from the south. Slavery only became a major issue in the North in 1863 with the Emancipation Proclamation. Slavery was legal in the North through 1865. A big cause was Lincoln's bitter rhetoric dividing people to win election - like Joe Biden's blood red speech when he descended into hell. What did I get wrong?