They must have done, mustn't they? It's reasonable to guess (unless someone knows different) that the American square dance had its origins in the quadrille, and their contras must be related to our existing longways-set dances. And Appalachian step dance is not so far removed from the clogging and stepping found in several regions of England, and no doubt elsewhere.

I'm just guessing really. I'm sure that someone will be along soon to expand (or contradict).

Marje