| A | B |
|---|
| reservoir | a lake used for collecting and storing water |
| amendment | a change made to something that is already written |
| artifact | an object that we find that was used by people in the past |
| canal | a waterway built by people |
| colony | a settlement that is ruled by another country |
| empire | the land and people under the control of a powerful nation |
| causeway | a road built on soil piled up in shallow water |
| historical society | a group of people, who have special interest in the history of their community |
| invention | something that has been made for the first time |
| pollution | anything that makes the air, water, or land unclean |
| transcontinental | something that goes from one side of a continent to the other |
| slave | a person who is owned by another person and works without pay |
| tax | the money paid to the government to run a city, state, or country |
| decade | a length of time that is 10 years |
| communication | the sharing of feelings, thoughts, and information |
| transportation | ways of moving things from one place to another |
| solution | a way to solve a problem |
| suburb | a community built near a city |
| tepee | a shelter made of poles covered with buffalo skin |
| satelite | a spacecraft that is used to send radio, telephone, and television signals |
| revolution | a fight for a change in government |
| legend | a story that explains how something came to be |
| independence | freedom from the rule of others |
| civil war | a war in which two parts of one country fight each other |
| century | a length of time that is 100 years |
| archaeologist | a scientist who looks for artifacts and explains how they were used |
| disaster | something that happens that causes great harm to a community |
| lodge | a home made of logs, earth, and grass |
| constitution | a plan for government |
