Sumerians and Mesopotamia

Civilizations developed around 3000 BC in river valleys of Mesopotamia, Egypt, India, and China due to the need for water.
Early civilizations had social classes, specialized labor, advanced technology, governments, and systems of values and beliefs.

Located in modern-day southern Iraq, Mesopotamia means "the land between the rivers" in Greek.
It lies between the Tigris and Euphrates rivers, part of the Fertile Crescent stretching from the Mediterranean Sea to the Persian Gulf.
Early settlers in Mesopotamia were hunters and herders around 7000 BC, with farming villages emerging by 4000 BC.
Farmers developed irrigation systems to manage the rivers' seasonal floods and droughts, enabling surplus food production.

By 3000 BC, Sumerian cities like Ur, Uruk, and Eridu became independent city-states with their own governments.
Sumerian cities faced challenges of harsh landscapes, leading to isolation and independence.
City-states were protected by walls made of mud bricks, with a ruler's palace and temple (ziggurat) at the center.
Sumerians practiced polytheism, with each city-state honoring its own god through ziggurats.
Priests initially ruled, later replaced by kings who claimed divine authority, leading to hereditary monarchies.
Society was divided into social classes: upper class (kings, priests, warriors), middle class (merchants, farmers, artisans), and enslaved people.
Farmers cultivated wheat, barley, and dates, and raised livestock.
Trade was vital due to resource scarcity, with trade routes extending to India and Egypt.

Writing: Cuneiform, the earliest known writing system, used wedge-shaped marks on clay tablets to record information and stories like the Epic of Gilgamesh.
Technology and Mathematics: Inventions included the wheel, carts, sailboat, wooden plow, and potter's wheel. Sumerians also developed bronze tools and weapons.
Mathematics: They used geometry, a place-value system based on 60, and created tables for division and multiplication. The 60-minute hour, 60-second minute, and 360-degree circle originated from Sumerian math.
Astronomy: Sumerians tracked stars and created a 12-month lunar calendar.

Sargon of Akkad: Around 2340 BC, Sargon created the world's first empire by uniting Sumerian city-states with Akkad, lasting over 200 years.
Hammurabi's Babylonian Empire: Around 1792 BC, Hammurabi created the Babylonian Empire, famous for Hammurabi's Code, a set of laws addressing crimes, farming, business, marriage, and family.
Hammurabi's Code: Included the principle of "an eye for an eye" and influenced later legal systems.

Military Power: The Assyrian Empire arose around 900 BC, with a well-trained army known for brutality, using iron weapons learned from the Hittites.
Government: The empire was divided into provinces, connected by roads with officials and soldiers ensuring control.
Culture: Assyrians adopted and adapted Mesopotamian culture, including law codes and religion.
King Ashurbanipal: He created one of the world's first libraries in Nineveh, holding 25,000 tablets.

Rebellion: The Chaldeans, led by Nabopolassar, revolted against Assyrian rule and, with the Medes, destroyed Nineveh in 612 BC.
New Babylonian Empire: Nebuchadnezzar rebuilt Babylon into a grand city, known for the Hanging Gardens.
Babylon's Greatness: Included massive walls, palaces, temples, and the Hanging Gardens, supported by advanced irrigation.
Scientific Advancements: Chaldeans made advancements in astronomy, creating sundials and a seven-day week.
Fall of the Empire: Weakened by poor leadership, the Chaldean Empire fell to the Persians in 539 BC, who preserved its culture.