Before the creation of tools, nomadic people roamed the earth following wild crops and animals for food. heir food, instead of traveling around picking wild food. People invented farming in different places at different point of time. In West Asia about 12,000 BC, in Africa about 10,000 BC, in South America about 8000 BC, in China about 6000 BC. From there farming spread (sometimes as a result of farmers conquering their neighbors) to Europe (about 7000 BC, reaching northern Europe about 4500 BC), to Sudan (about 4000 BC), and to Native Americans (about 1 AD).