a person who is descended from a certain ancestor; children's children
small groups of people made up of related families
no longer living; having died out
the use of knowledge and skills to make the work of everyday life easier
objects made by people, especially from a long time ago
each person did one kind of task
tame plants and animals for human use
domesticated animals that provide resources
people with no settled home
nomadic herders that travel from place to place with their animals
take care of plants in small gardens
raising of domesticated animals and plants for use by people
slash and burn
to cut and burn forest lands to to gain new farmland
black volcanic rock from the mountains
a place in the desert that has a dependable supply of water
trade goods brought in from other places
trade goods sent to other places
society with a reliable food source, established laws, customs, and job specialization
stepped tower built by ancient Sumerians as a temple to a god
a city and the area around it
complex society with developed forms of religion, ways of governing, and centers of learning
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