|
 glacier | a huge, thick sheet of slowly moving ice |
| migration | a movement from one place to another |
| agriculture | farming, or growing plants |
| civilization | a group of people living together with organized systems of government, religion, and culture |
| pueblo | the Spanish word for town |
| surplus | having extra |
| potlatch | a large feast that may last for several days |
| clan | a group of related families |
| irrigation | a way of supplying water with streams, ditches, or pipes |
| staple | a main crop |
| ceremony | an event at which people gather to express important beliefs |
| lodge | a type of home that Plains Indians made using bark, earth, and grass |
| nomad | a person who moves around and does not live in one place |
| travois | equipment similar to a sled, made from two long poles and usually pulled by a dog |
| longhouse | a large house made out of wooden poles and covered with bark |
| confederation | a joining of several groups for a common purpose, a type of government |
| wampum | pieces of carefully shaped and cut seashell made into strings or belts, often used as money |
| barter | to exchange goods without using money, to trade |