| A | B |
|---|
| What does nomadic mean? | to travel from place to place hunting and gathering food |
| How was the behavior of nomadic people regulated? | through unwritten customs |
| How did ancient people progress in their social organization? | nomadic clans to villages to city-states to empires |
| The first civilizations developed near these two rivers | the Tigris and the Euphrates |
| Why did the first civilizations develop in river valleys? | because annual flooding left silt on the surrounding land which enriched the soil |
| How did the first farmers cope with challenges posed by rivers? | they learned to control flooding and use irrigation systems |
| What was the name of the area that gave birth to the first civilizations? | Mesopotamia |
| What do all civilizations need to survive and grow? | resources |
| What was the first civilization of the ancient world? | Sumer |
| What are the five key elements of civilization? | centralized government; organized religion; arts, architechture, and public works; job specialization and social classes; and writing |
