Complex sentence: Between 1701 and 1715 there was no official French-Canadian presence at the Straits of Mackinac, although unlicensed fur trading by coureurs des bois no doubt continued during this period.
Split into simpler sentences: Between 1701 and 1715 there was no official French-Canadian presence at the Straits of Mackinac. Unlicensed fur trading by coureurs des bois no doubt continued during this period.