Why are Sumerian legacies known to the world today?

The ancient Sumerians, who flourished thousands of years ago between the Tigris and Euphrates rivers in what today is southern Iraq, built a civilization that in some ways was the ancient equivalent of Silicon Valley. That forced them to make ingenious use of materials such as clay—the plastic of the ancient world.

Explanation:

what group of people depend on what yoy are talking i will still you once you tell me what group of people you are talking about : )

i think i know what group you are talking about so the brahmins

a factory opens that mass-produces light bulbs.

explanation:

not sure if that's an answer to your questions but this is an example! : )