5. Distinguish between the three stages of savagery, barbarism, and civilization, and give examples of existing peoples in each stage.
6. Can you name any savages still living in the Stone Age?
7. What stone implements have you ever seen? Who made them? Where were they?
8. Why should the discovery of fire be regarded as of more significance than the discovery of steam?
9. Why has the invention of the bow-and-arrow been of greater importance than the invention of gunpowder?
10. How does the presence of few tameable animals in the New World help to account for its tardier development as compared with the Old World?
11. What examples of pastoral and agricultural life among the North American Indians are familiar to you?
12. Give examples of peoples widely different in blood who nevertheless speak the same language.
13. In the classification of mankind, where do the Arabs belong? the Persians? the Germans? the inhabitants of the United States?
14. Enumerate the most important contributions to civilization made in prehistoric times.