Why was the issue of slavery become closely tied to states' rights?

Answer 1

Back then the states rights, was the cause of slavery because the south debated allot about black slavery. In the south congress gave rights, that stated slavery was allowed. Involving them to go to places were blacks (African) lived. The congress, most on the slavery side. Said that south of the united states would include all slave states, and in the north all states there was free. By doing all those laws made slavery right to the wight people. In the south.

basically: The reason why is, is because the united states president, and the congress were to lazy to do there on things, like brush their teeth. So they got other (Black) people to do it.