social studies Chapter 2 lesson1 & 2 Study online at quizlet.com/_t2m3r 1. ancestor An early family member 2. archaeologist A scientist who studies the culture of people who lived long ago. 3. argiculture farming 4. artifact An object made by early people 5. century a period of 100 years 6. civilization a culture that usually has cities and well-developed forms of government, religion, and learning. 7. class a group of people who are alike in some way. Classes are treated with different amounts of respect in a society. 8. decade a period of 10 years 9. descendant A person's child, grandchild, and so on 10. extinct no longer in existence 11. Glacier A huge, slow-moving mass of ice covering land 12. migration The movement of people 13. millennium a period of 1,000 years 14. nomad a wanderer who has no settled home 15. origin story A story or set of stories by Native American people that tell about their beginings and how the world came to be 16. pueblo a spanish word for "village" 17. slavery the practice of holding people against their will and making them carry out orders. 18. technology the use of scientific knowledge or tools to make or do something 19. theory A possible explanation 20. time line a diagram that shows events that took place during a certian period of time. 21. tribe a group of people who share the same language, land, and leaders