Mesopotamia and the Fertile Crescent

The first true civilization in human history grew up in a region called Mesopotamia, a Greek word meaning "between the rivers." Those two rivers are the Tigris and the Euphrates, which today flow through Iraq, Syria, and Turkey. The wider region is called the Fertile Crescent because its rich, well-watered soil made it ideal for farming — and farming, as we learned in Lesson 1, is the seed of every civilization.

The Sumerians — First Civilization

Around 3500 BCE, a people called the Sumerians settled in southern Mesopotamia. They built the world's first true cities, including Ur, Uruk, and Eridu. Each Sumerian city was an independent city-state with its own king, its own army, and its own patron god. The Sumerians met all five traits of a civilization — they had cities, specialized workers, institutions, writing, and advanced technology.

Cuneiform — The First Writing

The Sumerians invented one of the earliest writing systems, called cuneiform (meaning "wedge-shaped"). Scribes pressed the cut end of a reed into soft clay tablets, leaving wedge-shaped marks. Cuneiform began as picture symbols for trade records but quickly grew into a full writing system used for laws, stories, and religious texts. The Epic of Gilgamesh, one of the oldest surviving stories on Earth, is written in cuneiform.

Ziggurats — Stepped Temples

Sumerians built huge stepped pyramids called ziggurats at the heart of every city. A ziggurat was a temple to the city's patron god, rising in terraces toward the sky. The base could be 50 meters across and the top a small shrine the priests used for ceremonies. Ziggurats showed off the wealth and power of the city-state — and the religious institution that ran daily life.

Irrigation, the Wheel, and Bronze

Mesopotamia's climate was hot and dry, so farmers had to bring river water inland. They dug long irrigation canals to spread Tigris and Euphrates water across their fields. The Sumerians also invented the wheel (used first for pottery, then for carts), the plow, and the technique of melting copper with tin to make bronze. These inventions spread across the ancient world.

Akkad and Babylon — Empires Rise

Around 2334 BCE, a powerful king named Sargon of Akkad conquered the Sumerian city-states and built the world's first empire. Several centuries later, the Babylonian Empire took control of Mesopotamia. Babylon's greatest king, Hammurabi (ruled ~1792-1750 BCE), is famous for the Code of Hammurabi — one of the earliest written law codes. It carved 282 laws onto a stone pillar so that every citizen could read what the rules were, including the famous principle "an eye for an eye."