Why did the beliefs of states rights cause conflict between the north and south?

The belief in states' rights, particularly in the South, stemmed from a desire to maintain autonomy over local governance and resist federal intervention, especially regarding slavery. Southern states argued that the federal government could not dictate their laws or practices, leading to tensions with the North, which supported a stronger federal authority to uphold national unity and civil rights. This ideological divide culminated in conflicts over issues such as the enforcement of Federal Laws, tariffs, and ultimately, the legality of slavery, contributing to the onset of the Civil War.