With plants, they might try a fruit and someone dies, so they say, 'No, that's not a good fruit' and finally they would strike on the right plants and animals. Once they have enough food, societies become more secure. Now people have time for each other. Men and women, the father and mother, have more time and one sees population explosion coming into being. With more people you get more social stratification and specialisation.
People become full time craftsmen and experts in different fields.
The main crops to be developed were cereals such as wheat, barley, sorghum and millet. Some areas produced their own distinctive grains such as the Ethiopian highlands where the staple food 'tef' is still used to make the spongy traditional bread, injera. Domestication of animals such as sheep and goats as well as the cultivation of plants meant that early humans were able to settle for longer periods of time in one area so they could oversee the sowing and reaping of crops. This meant that shelters became more permanent constructions made of mud or brick. The communities also needed more implements such as stones for grinding and pots for storage.