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.
Macedonia (Greece)
Macedonia lies at the crossroads of human development between the Aegean and the Balkans. The earliest signs of human habitation date back to the palaeolithic period, notably with the Petralona cave in which was found the oldest yet known European humanoid, "Archanthropus europaeus petraloniensis". In the Late Neolithic period (c. 4500 to 3500 BC), trade took place with quite distant regions, indicating rapid socio-economic changes. One of the most important innovations was the start of copper working.