Nonsense. Slavery was also well established in the British colonies and continued after independence. It is interesting to read the “Code Noir” and note certain key differences regarding slave laws in French Catholic territory and the U.S.
Not that all slave owners held to the code.
I don’t think anyone argues that the U.S. originated the practice but it certainly was not established by the French either.
The phrase "original sin". There's that little word "original" sitting there.
They do argue it. We even had a U.S. president say it. This is a mainstream idea.
Barack Obama, vying for presidency, names slavery as “original sin”
"Oh yeah but that was just Obama who said that" <-- Anybody who believes this nonsense statement here to the left <--- is clueless about indoctrination in the government schools. This is in fact a mainstream idea and a lot of people argue it.