sentences:  But from Saint Paul, the settlers could obtain staples and other goods in the span of a single summer.In the face of these relative inconveniences and the economy of shipping over the trails, the Hudson's Bay Company was unable to compel all trade to go by way of York Factory on Hudson Bay, and by 1850 the company's monopoly was broken.In fact, the company itself all but abandoned the York Factory route for heavy trade in 1857, and instead shipped its own traffic in bond through the United States and over the Red River Trails.