The Mesopotamians
olmec
huge pyramidal temples known as Ziggurats
As societies grew into civilizations, several key developments occurred, including the creation of complex social hierarchies, the establishment of centralized governments, the development of written language and record-keeping systems, the advancements in technology and infrastructure such as irrigation and architecture, and the growth of trade networks both within the civilization and with other civilizations.
When I think of Sumerians, I think of Cuneiform because it is the first known record of a written language. Sumerians are also known for Ziggurats, but that is a characteristic of most civilizations built around the Tigris and Euphrates rivers. Ziggurats are basically pyramidal structures built for worship, temples.
The Sumerians are known for building ziggurats that were close to the sky to be closer to heaven.
why were ziggurats so large
The ziggurats were invented in Mesopotamia.
No
why were ziggurats so large
Ziggurats were said to connect Earth and Heaven
The answer will depend on what the "myan civilation" (whatever than means) was or is! I suggest some checking of your spelling may be a good idea.
The Sumerians built the ziggurats to please and respect their gods.