| A | B |
|---|
| history | written and other recorded events of people |
| prehistory | time before writing was invented |
| archaeologist | a scientist who exanubes ibjects to learn oabout the human past |
| oral traditions | stories passed down by word of mouth |
| geography | the study of Earth's surface and the processes that shape it |
| hominid | a modern human or a member of an earlier group that may have included ancestors or relatives of mordern humans |
| Stone Age | a period of time during which hominids made lasting tools and weapons mainly from stone; the earliest known period of prehistoric culture |
| nomad | a person who has no settled home |
| domesticate | to adapt wild plants or tame wild animals and to breed them for human use |
| irrigation | supplying land with water through a network of canals |
| surplus | more than is needed |
| civilization | a society with cities, a central gornernment, job specialization, and social classes |
| artisan | a worker who is especially skilled at crafting items by hand |
| social class | a group of people with similar backgrounds, incomes, and ways of living |
