They were built because they worshiped their Gods. Then in order to keep their Gods happy they believed in human sacrifices
the Mayan temples were built when the mayans felt like building them
no one truly knows the mayans were quite a mysterious civilization.
Well, first of all, it wasn't built. It was designed and carved after the study of the sky and its celestial patterns. Also, it was "built" throughout the entire reign of the Mayans.
Aliens don't exist.
Ziggurats were first built by the Summerians in 5200 BCE.
Sumerian Ziggurats were built to honor how the gods descended to earth.
The Sumerians built the ziggurats to please and respect their gods.
Babyionians
The Mesopotamians famously built ziggurats.
the Mesopotamian built the first ziggurats at ur
The Mesopotamia civilization built ziggurats and used cuneiform to keep records. The ziggurats were built in the shape of terraced step pyramids and had levels that receded as they went higher.
on raised platforms
They were build about in 1854
In the 3000s BCE.
for a cities patron god
YES