What was unique about sumer?

Answer 1

There is quite a bit known about the Sumerian civilization. People known as Ubaidians in the fifth millennium formed settlements that would become Sumer. The Sumarians after 3250 BC began to intermarry with locals and thus formed Sumerians. The Sumerians would eventually form the Semites, those people living in the Middle East and Mesopotamia. They had a long history of decline and prospering, and built cities discussed in the Old Testament.

Answer 2

Sumerians are famous for a lot of things! For example, They invented the wheel. Believe or not they were the first to write!

Answer 3

They were known 4 trading

Answer 4

a. the ziggurat.