Semitic people
The further occupation of Ur only becomes clear during its emergence in the third millennium BC (although it must already have been a growing urban center during the fourth millennium). As other Sumerians, the new settlers of Ur were a non-Semitic people who may have come from the east circa 3300 BCE, and spoke a language isolate. The third millennium BC is generally described as the Early Bronze Age of Mesopotamia, which ends approximately after the demise of the Third Dynasty of Ur in the 21st century BC.