A large, level area that rises above the surrounding land.
Plateau
A crop that is raised for sale.
Cash Crop
A fertile place in a desert where there is water and vegetation
Oasis
A refusal to buy or use certain products or services.
Boycott
To settle in an area and take control of its government.
Colonize
The ability to read and write.
Literate
A religious journey.
Pilgrimage
The spread of customs and ideas from one culture to another.
Cultural Diffusion
To add variety.
Diversify
To adapt wild plants or animals for human use.
Domesticate
A person who has no permanent, settled home.
Nomad
A region of tall grasses with scattered trees.
Savanna
A long period of little or no rain
Drought
A society that has cities, a government, and social classes
Civilization
The average length of time a person can expect to live.
Life expectency