Why did your county have slavery until 1830’s??
The UK outlawed slavery through an act of parliament. In the US half a million people died defending slavery and then conservative shits constructed a Jim Crow society to oppress these people for another century. Explain that.
Almost all of the slave owners in the United States were of British origins, including English, Scottish, Northern Irish, and Welsh.
Other slave owners may have existed, as there were some Black, German, Dutch, and French slave owners presumably too, but far less common in the USA at least.