False, states like Virginia had them, mainly in the South, the ones that was mainly based on agriculture, but not all of them had slaves. States like Rhode Island didn't have any.
It means that the activities that they do are just to bring the other person down (usually during campaigning)
In Exodus the Israelites were an enslaved people for generations, just like the slaves we learn about in our history books. The slaves were inspired by the Israelites and how they fought for their freedom. this inspiration led them to write songs like "Go down Moses" and to keep firm in fighting for their freedom.