| A | B |
| What did nomadic people do? | They traveled 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 organizations? | Nomadic clans to villages to city-states to empires |
| The first civilizations developed near what two rivers? | The Tigris and Euphrates |
| Why did the first civilizations develop in river valleys? | Annual flooding left silt on land which enriched soil |
| How did farmers cope with challenges posed by rivers? | They learned to control flooding and use irrigation systems |
| What area 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? | Cent'lGov't; OrgRel; Arts/Archit&PubWks; JobSpec/SocCl; Writing |