sentences:  By about 3,000 years ago the progenitors of the Yupiit had settled along the coastal areas of what would become western Alaska, with migrations up the coastal rivers—notably the Yukon and Kuskokwim—around 1400 C.E., eventually reaching as far upriver as Paimiut on the Yukon and Crow Village ("Tulukarugmiut") on the Kuskokwim.Before a Russian colonial presence emerged in the area, the Aleut and Eskimo spent most of their time sea-hunting animals such as seals, walruses, and sea lions.They used mainly wood, stone, or bone weapons and had limited experience fishing.