...g whom slavery had existed from immemorial time, would never abet the foreign merchant, or become his factors in the nefarious traffic. Fraud and force remained, therefore, the means by which, near Newfoundland or Florida, on the shores of the Atlantic, or among the Indians of the Mississippi valley, Cortereal and Vasquez de Ayllon, Porcallo and Soto, with private adventurers. whose names and whose crim...