What’s the most important contribution of the Hebrews?

monotheism

Explanation:

The main, and most important thing the Hebrews contributed was the idea of monotheism, the practice of virtually every religion today. The ancient Greeks did not contribute in religion so much as the Hebrews did, their contributions were more towards writings and art, great epic poems, and democracy.

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there is no photo, therefore i can not answer your question.