| A | B |
|---|
| Prehistory | the time before there was writing |
| Hominid | an early ancestor of humans |
| Ancestor | a relative who lived in the past |
| Tool | any handheld object that has been modified to help a person accomplish a task |
| Paleolithic Era | the first part of the Stone Age |
| Hunters-Gatherers | people who hunt animals and gather wild plants seeds, fruits, and nuts to survive |
| Society | a community of people who share a common culture |
| Ice Ages | long periods of freezing weather |
| Migrate | move to a new place |
| Land Bridge | a strip of land connecting two continents |
| Mesolithic Era | the middle part of the Stone Age, from about 10,000 years ago to about 5, 000 years ago |
| Neolithic Era | the last Stone Age, lasting from about 10,000 years ago to about 5,000 years ago in Egypt and Southwest Asia and later elsewhere |
| Domestication | the process of changing plants or animals to make them more useful to humans |
| Agriculture | the development of farming from the domestication of plants |
| Megaliths | huge stones used as monuments or sites for religious gatherings |
