Civil war political system

Was the failure of the political system to end slavery the cause of the civil war? I think yes. There were many events that led up to the civil war that I think sparked the start of it. For example, the Kansas-Nebraska Act, the Fugitive Slave Act, and the famous book Uncle Tom’s Cabin. The Kansas-Nebraska Act was one of the sparks to the civil war. This Act allowed Kansas and Nebraska to become a territory in the United States. But there was a law called Popular Sovereignty. In these two new territories there were pro-slavery people and anti-slavery people. Popular Sovereignty stated that the people in the territories of Kansas and Nebraska could vote on whether or not there would be slavery in the territory. Now if you think about it there are people that are for slavery and people that are against slavery in the same territory voting on whether or not there should be slavery in that territory. Of course there was going to be some tension between all the people, and tension leads to fights and arguments. Fights and arguments lead to wars, civil wars! The next cause is the Fugitive Slave Act. This was a law passed in 1850 stating that every runaway slave must be captured and turned back in to its master. I think that this is a cause of the civil war because some slaves were actually free. So if there was a black person somewhere where black people usually aren’t then someone would tell on that person and they would go back to being a slave. Anti-slavery people hated this because they wanted slavery to be done with and they thought that it wasn’t fair that even if a slave became free they never got any proof that they were free so if someone turned them in there was no way for the free slave to prove that they have actually been freed. So this of course made the anti-slavery people mad and there was probably fighting and arguing. This causes even more tension build up between the pro-slavery and the anti-slavery people. Lastly I think that the book Uncle