written accounts noted friendliness on the part of the First Nations, who profited in trade with Europeans. Such trade strengthened the more organized political entities such as the Iroquois Confederation. The Aboriginal population is estimated to have been between 200,000 and two million in the late 15th century. The effect of European colonization was a 40 to 80 percent Aboriginal population decrease post-contact. This is attributed to various factors, including repeated outbreaks of European infectious diseases such as influenza, measles and smallpox (to which they had not developed immunity), inter-nation conflicts over the fur trade, conflicts with colonial authorities and settlers and loss of land and a subsequent loss of nation self-suffiency. For example, during the late 1630s, smallpox killed more than half of the Huron, who controlled most of the early fur trade in what became Canada. Reduced to fewer than 10,000 people, the Huron Wendat were attacked by the Iroquois, their traditional enemies. In the Maritimes, the Beothuk disappeared entirely. There are reports of contact made before Christopher Columbus between the first peoples and those from other continents. Even in Columbus' time there was much speculation that other Europeans had made the trip in ancient or contemporary times; Gonzalo Fernández de Oviedo y Valdés records accounts of these in his General y natural historia de las Indias of 1526, which includes biographical information on Columbus. Aboriginal first contact period is not well defined. The earliest accounts of contact occurred in the late 10th century, between the Beothuk and Norsemen. According to the Sagas of Icelanders, the first European to see what is now Canada was Bjarni Herjólfsson, who was blown off course en route from Iceland to Greenland in the summer of 985 or 986 CE. The first European explorers and settlers of what is now Canada relied on the First Nations peoples, for resources and trade to sustain a living. The first written accounts of interaction show a predominantly Old world bias, labelling the indigenous peoples as "savages", although the indigenous peoples were organized and self-sufficient. In the early days of contact, the First Nations and Inuit populations welcomed the Europeans, assisting them in living off the land and joining forces with the French and British in their various battles. It was not until the colonial and imperial forces of Britain and France established dominant settlements and, no longer needing the help of the First Nations people,