Long before Europeans arrived in North America, an active trade between the Aboriginal communities of North America existed in furs and other commodities. As the fur trade has evolved over the centuries so have trapping practices. Both Aboriginal and non-Aboriginal trappers have adapted their practices to reflect increased knowledge and understanding of the fur trade and the species they harvest. Today, the success of Canada's fur trade is as much recognition of a centuries-old tradition of excellence as it is a modern example of the sound application of conservation principles and sustainable development.