Sumer
Sumer () is the earliest known civilization in the historical region of southern Mesopotamia, modern-day southern Iraq, during the Chalcolithic and Early Bronze ages, and one of the first civilizations in the world along with Ancient Egypt and the Indus Valley. Living along the valleys of the Tigris and Euphrates, Sumerian farmers were able to grow an abundance of grain and other crops, the surplus of which enabled them to settle in one place. Prehistoric proto-writing dates back before 3000 BC. The earliest texts, from c. 3300 BC, come from the cities of Uruk and Jemdet Nasr; early cuneiform script emerged around 3000 BC.
History of Western civilization before AD 500
The earliest urban civilizations of Europe belong to the Bronze Age Minoans of Crete and Mycenaean Greece, which ended around the 11th century BC as Greece entered the Greek Dark Ages. Ancient Greece was the civilization belonging to the period of Greek history lasting from the Archaic period of the 8th to 6th centuries BC to 146 BC and the Roman conquest of Greece after the Battle of Corinth. Classical Greece flourished during the 5th to 4th centuries BC. Under Athenian leadership, Greece successfully repelled the military threat of Persian invasion at the battles of Marathon and Thermopylae. The Athenian Golden Age ended with the defeat of Athens at the hands of Sparta in the Peloponnesian War in 404 BC.