Subject:
Chapter 1 Before Civilization Overview Food Gathering and Stone Technology The Agricultural Revolutions Cattle and water buffalo eventually tamed enough to be yoked to plows and became essential to agriculture Droppings produced fertilizer Wool and milk helped sustain resources Llamas were most important in the Americas Provided meat, transport, and wool Guinea pigs and turkeys for meat Dogs for meat and hunting Possibly no other animals in America could have been domesticated, and none could be imported due to the continent?s isolation Pastoralism (farming with large herds of grazing animals) most prominent in dry areas Sahara drying out (driest around 2500 B.C.E.) led to pastoralists replacing farmers who then traveled south
