A complex society with an organized government, art, religion, and social class divisions

A scientist who studies prehistoric people, their artifacts and cultures 

any object made by a human being

words or pictures written or cut into a surface.

an object or place made to remember a person or event.

tame plants and animals, create a constant supply of food

get water to crops

extra supply, to have more than you need

become an expert at one job

the exchange of goods and services