history review

3. a barrier to travel – separate cultures - such as the Himalayas between China and India
4. a barrier to travel – separate cultures - such as the Sahara in Africa
8. Valley great place to begin a civilization in ancient times - such as the Tigris-Euphrates valley
10. transportation routes – sometimes through barriers - such as the Nile through the Sahara
11. first-hand or eye-witness accounts of an event
12. person who studies humans past and present
14. flat fertile lands – good for farming – often attract invaders - such as the Steppes of Russia

1. person who studies the physical terrain (topography), climate, and how humans interact
2. isolate cultures from other cultures - such as Japan
5. a barrier to travel – separate cultures - such as the Amazon Rainforest in Brazil
6. person who recovers and studies artifacts left behind by humans
7. person who studies the economy, money, business
9. person who studies human society and how people interact
13. the type of people in a culture