Flooding meant that crops weren't growing as well. Cities began to struggle. In the end, Sumer was invaded by the Elamites who came from modern-day Iran. Narrator: Hello, future people of the UK.
He maintains that Menes was at one and the same time the Sumerian emperor in Mesopotamia and the first dynastic king of Egypt, a crown-colony of his world-empire.
Such cylinder seals were used for millennia throughout Mesopotamia, where they were ... proto-cuneiform signs in early writings about the trade of farming produce and textiles.