The Ziggurat of Ur was built in, 2100 b.c.
Ur-Nammu was the king that ordered the ziggurat at Ur to be built.
2100b.C.
It took 5 years to build the Ziggurat
The Ziggurat of Ur is the first proper Ziggurat for which we have any evidence. However, There are raised pyramidal structures that preceded it like Tepe Sialk in Persia, but these are not proper ziggurats. See the link below to learn more about Tepe Sialk.
the ziggurat was initially built in honor of some deity or the other.
Ur-Nammu was the king that ordered the ziggurat at Ur to be built.
2100b.C.
The specialized workers that built the Ziggurat of Ur suggests the Sumerians had an advanced civilization.
the Mesopotamian built the first ziggurats at ur
There is no single "Ziggurat of Mesopotamia", a Ziggurat is the name for a type of structure built first by the Sumerians, but also by the Elamites, Akkadians, Babylonians and Assyrians as part of temple complexes dedicated to their local religions. The most famous may be the "Great Ziggurat of Ur" was built by King Ur-Nammu in about the 21st century BC
The Ziggurat at Ur is probably the most famous, but the Ziggurat at Teppe Sialk is also rather famous.
They were meant to be used to worship the gods and be used as a city hall.
i believe it was Nana the moon god during Abraham's time (the patriarch)
The first Ziggurat was make by Nebbacanezer II in about 2000 B.C.
Nanna - the moon god. A ziggurat was built as a temple to worship this diety.
Ziggurat
The only way is to compare their complexity, size, how they were built and with what resources.