Which drew the horizontal line of slavery across the west along the 36 30’ parallel, the Kansas Nebraska act

The Missouri Compromise of 1820

Explanation: The Act repealed the Missouri Compromise of 1820, which drew the horizontal line of slavery across the West along the 36° 30' parallel, as both Kansas and Nebraska were north of this line. This reopened the question of slavery's western expansion.

The U.S Civil War started because the North wanted to abolish slavery. The South wanted to keep slavery. The Civil War started because the South didn't want to have slavery abolished. It didn't work out so well for the South because the North won and took over the South land.That is how the U.S Civil War started.

Explanation:i'm Sorry if wrong.