Because inventing stuff is something that can be useful for the economy and if you create something helpful many people can use it and you can be solving peoples problems by inventing.
If you can example what that means a little more maybe i can help
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I'm pretty sure the last one is correct.
Explanation:
Answer:
They believed in deities. The major deities in the Sumerian pantheon included An, the god of the heavens, Enlil, the god of wind and storm, Enki, the god of water and human culture, Ninhursag, the goddess of fertility and the earth, Utu, the god of the sun and justice, and his father Nanna, the god of the moon.
Explanation:
I hope this helps! <3