The Missouri Compromise of 1820, led to the civil war by making the northerners more aggresive in its anti-slavery views
The southerners also were outraged as well as the north was becoming more angry with slavery
They should have made the compromise seem more both sided.
By repealing the Missouri Compromise, people in the anti-slavery north viewed Congress as allowing the south to exert more control in Congress, and they resented it. It also made the south seem more aggressive in their pro-slavery sentiments.
Tensions began to rise with the pro-slavery and anti-slavery sides more and more.
Overall, the Missouri compromise should have been proposed in a different way, as this is one of the bigger reasons the civil war happened.
The missori compromise was creating equal balance, with it. It was dividing the free and slave states.
Whether the Missouri Compromise directly leads to the Civil War or postponed it depended on which side of the country you lived in at the time, and how you looked at it politically.