450-900 is the answer I think
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Answer:
The Pharaohs of Ancient Egypt were the supreme leaders of the land. They were like kings or emperors. They ruled both upper and lower Egypt and were both the political and religious leader. ... The son of the current Pharaoh would inherit the title and would often go through training, so he could be a good leader.
Explanation:
The Soviet Union suffered the most .
Answer:
introducing zero as a placeholder
Explanation:
The Maya were one of the earliest ancient nations to employ the concept of zero, allowing them to write and compute vast sums.
<u><em>Thank you! Please Mark Brainliest!</em></u>