Fort Frontenac

…had founded a fur-trading post, Fort Frontenac, on Lake Ontario. Shortly afterward he became associated with the French explorer René-Robert Cavelier, sieur de La Salle, who, with Frontenac’s support, obtained royal consent to continue the explorations of Louis Jolliet down the Mississippi River to its mouth. La Salle took advantage…

…fort on Lake Ontario (Fort-Frontenac), holding the Iroquois in check, and intercepting the fur trade between the Upper Lakes and the Dutch and English coastal settlements.