The First Empires
- Sargon of Akkad defeated the Sumerian city-states and formed the first empire, uniting Akkad and Sumer under his rule in the 23rd century BC.
- Hammurabi conquered many Amorite cities and formed the Babylonian Empire in the 18th century BC. He established one of the earliest codes of law.
- The Assyrians built a powerful iron-armed army that took over Mesopotamia around 900 BC, forming the Assyrian Empire that lasted about 300 years.