| A | B |
| four empires of Mesopotamia | Akkadian, Babylonian, Assyrian, Neo-Babylonian |
| empire | large territory where several groups are ruled by a single powerful leader or government |
| capital | a city that is the center of government |
| tribute | wealth sent from one country or ruler to another as a sign that the other is superior |
| siege | a military blockade of a city to force it to surrender |
| aqueducts | a pipe or channel that brings water from distant places |
| bas-relief | a sculpture in which the image projects out from a flat surface |
| astronomy | the study of the stars and planets |
| Code of Hammurabi | code of laws that applied to every person in the empire |
| stele | carved stones |