| A | B |
| Ice Age | Began more than 70,00 years ago, and was a long, cold time when thick sheets of ice or glaciers covered most of the earth. |
| glaciers | thick sheets of ice. |
| culture | a way of life |
| Bering Strait | A narrow waterway that separates Asia from North America.l |
| strait | a narrow waterway that connects two larger bodies of water |
| land bridge | a bridge that joins land. |
| Beringia | land bridge that joined Asia and North America |
| grinding stone | hand sized rock used as a tool. |
| hunting | was th way the first American survived |
| hunting spears | tools the first Americans used to hunt, it had a sharp edge |
| mammoths | hairy elephant-like bests that were a part of the early days. |
| surplus | an amount of food or item greater than what is needed |
| specialize | people spend most of their time doing a special job |
| religion | belief in God or gods. |
| civilization | a culture that has developed systems of governement, religion, and learning. |
| empire | is made up of lands and people ruled by one group or leader |
| Tenochtitlan | One of the largest cities in the world 400 years ago that the Aztecs built. |
| Cuzco | Incan capital in modern day Peru. |
| irrigation | bringing water to dry field from rivers or lakes by means of ditches |
| Four Corners | the place where the states of Arizona, New Mexico, Utah, and Colorado meet. |
| Pueblo Bonito | town or village that is beautiful that was built in a canyon. |
| Cahokia | was the largest village built by the Mississippians located near the Mississippi river. |
| history | study or record of what happened in the past. |
| historian | they try to find out what happened along time ago. |
| primary source | are the most valuable clues from the past and is something that comes from the time that is being studied. |
| secondary source | is an account of the past written by someone who was not an eye witness to the events. |
| artifacts | objects left behind by people who lived long ago. |
| archaeologists | scientists who search for and study artifacts. |
| timeline | a diagram that shows when important events took place. |
| decade | a ten year period of time. |
| century | a hundred year period of time. |
| b.c. | before Christ |
| a.d. | anno Domini which is a Latin word that means in the year of the Lord |