Our ancestors began to build their houses, and to keep their poultry. Shelters for people and household animals needed material to build. At the very moment, wood was the natural and most easily accessed raw material for cottages and fences. As the growing need for wood, logging became a career form, the lumberjack, and places they process logs turned into the counterpart of modern sawmill . One of four basic resources used in game. The others are iron , stone, and food.