Should slavery be abolished in all states?

yes

Explanation:

Slavery should be abolished on a worldwide basis, because it is an institution which relies on a belief that humans are not equal and that some humans are more intrinsically worthwhile than others. Most civilizations today acknowledge that slavery is a monstrous evil and have enacted legislation to make it illegal.

Yes. People should not be treated as property or be viewed as less than someone else. Worldwide, this has been an issue but most countries have outlawed it. It's a sense of toxic and inhuman superiority and no one should be able to decide a human's worth.