Unit 3 Vocabulary

a type of brick made of a mixture of mud and straw 

that is dried by the sun

countries that support and help other countries in a war; a person or group that gives help to another person or group

a simple object (such as a tool or weapon) that was made by people in the past

a group of people or animals

a part of the Great Plains, including portions of northern and western Texas, which was controlled by the Comanche Indians

groups of people, countries, organizations, etc., that are joined together in some activity or effort

a system of growing different types of crops on the same piece of land over a period of years; changing the crops planted 

each year helps keep the soil from wearing out

a member of a group of people who move from place to place instead of living in one place all the time

the period of time in the past before people could write; the time before history was written down

a tent that is shaped like a cone and that was used in the past by some Native Americans as a house.