I want to know the answer to the following question:
How long was there native Sumerian rule during the Third Dynasty of Ur?
All the background I'm provided with is that "The Sumerian city of Eridu, on the coast of the Persian Gulf, is considered to have been the world's first city, where three separate cultures may have fused — that of peasant Ubaidian farmers, living in mud-brick huts and practicing irrigation; that of mobile nomadic Semitic pastoralists living in black tents and following herds of sheep and goats; and that of fisher folk, living in reed huts in the marshlands, who may have been the ancestors of the Sumerians.". Is that enough to answer the question?
Answer: no