Certainly the sins of slavery were not original to the US. The northern states which forbade slavery (beginning with Vermont) led the world. Britain, belatedly declared slavery illegal in 1833, and Wilburforce played a key role in removing theological justifications.
No slavery was not an American creation. But it certainly was here when America was created.
Actually, the Congress of the Confederation led the way. In 1787 it prohibited slavery in the territories NW of the Ohio River.