Inuit are the descendants of what anthropologists call the Thule culture, which emerged from western Alaska around 1,000 CE and spread eastward across the Arctic, displacing the Dorset culture (in Inuktitut, the Tuniit). Inuit historically referred to the Tuniit as "giants", or "dwarfs", who were taller and stronger than the Inuit. Researchers hypothesize that the Dorset culture lacked dogs, larger weapons and other technologies used by the expanding Inuit society. By 1300, the Inuit had settled in west Greenland, and finally moved into east Greenland over the following century. The Inuit had trade routes with more southern cultures. Boundary disputes were common and led to aggressive actions.