Vaqueros, Gauchos and Llaneros(Venezuela) probably have the same origin in horse riding country side people on the Iberian Península. But I doubt the Gauchos in

Vaqueros, Gauchos and Llaneros(Venezuela) probably have the same origin in horse riding country side people on the Iberian Península. But I doubt the Gauchos influenced the Cowboys since they are far, far away.