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 archaeologist | scientist who learn about early people by digging up and studying the traces of early settlements |
| historian | Person who studies history by using primary sources, secondary sources and oral history |
| artifact | human-made object |
| primary source | something written or created by a person who witnessed a historical event |
| secondary source | written after a historical event by people who did not witness the event |
| oral history | unwritten verbal accounts of events |
| primary source example | letter, diary, photograph, videotape, and speeches |
| secondary source example | textbook |
| oral history example | stories, songs, customs |
| irrigation | watering of crops |
| slash-and-burn | the clearing of land for farming by cutting and burning vegetation |
| agriculture | planting of seeds to grow crops |
| domesticate | to grow and tend wild plants and animals |
| religion, art, language | Types of early human culture |
| nomad | a person who moves from place to place |
| hunter-gather | person who obtains food by hunting animals and gathering plants and moves when food becomes scarce |
| domesticate | to grow and tend wild plants or animals |
| agriculture | a planting of seeds to grow crops |
| slash-and-burn | the clearing of land for farming by cutting and burning vegetation |
| irrigation | the watering of crops |
| surplus | an amount of a good that is in excess of what is needed for survival |
| specialization | a skill in a particular work |
| social class | a group of people with similar customs, background, training and income |
| government | ways of creating order and offering leadership |