Mesopotamia

1. Art

1.1. Arch and vault

1.2. Zigurat of Ur

1.3. Isthar Gate

2. Natural Landscape

2.1. River floods

2.2. Between Trigris and Euphrates

2.3. Between Trigris and Euphrates

3. Religion

3.1. An

3.2. Enlil

3.3. Isthar

4. Economy

4.1. Agriculture

4.2. Livestock

4.3. Trade

5. Society

5.1. King

5.2. Priest

5.3. Scribes

5.4. Landowners

5.5. Farmers

5.6. Slaves

6. Politics

6.1. King ruler and law-maker

6.2. Code of Hammurabi