In what way does the ziggurat of UR reveal that Sumerians had developed an advanced civilization?

Question

Think about: the skills required to build the monument

the various purposes of the ziggurat

its location

Answer 1

The Ziggurat at Ur along with The Nazca lines, The Great Pyramid & Ollantaytambo is within one degree of latitude of an alignment with the center of the earth! How could the ancients do that without some kind of advancement!

Also, the stones used are way too big for anything (even in todays standards) to move!

The geometry used was yet to be discovered (or so we thought)

Answer 2

Because all Ziggurats were originally grain storage silos, representing wealth, in terms of a community's food resources!

This implied a stable farming society, with advanced architecture, sanitation and irrigation practices!

Some ziggurats are 5,000 years old, or more...