sentences:  In more recent times, the region was held by the Dakota until they were displaced by the Ojibwa in the eighteenth century.Also in the eighteenth century, the area became a source of pelts for the fur trade.In the 1840s, the mountains were pierced by the Woods Trail and skirted by the East Plains Trail, two of the Red River Trails between Fort Garry (modern Winnipeg) and Saint Paul, Minnesota.