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One key to sustaining the Persian Empire was A.an efficient communication system. B. incorporating ideas from other early civilizations. C. taxes to pay for the empire. D. sending the jews to jerusalem.

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6 votes
The answer would be A. an efficient communication system.

Persia was extremely well at sending messengers across to their troops, enemy, etc...
User Jens Ingels
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4 votes
an efficient communication system would be youre answer.
Hope this helps!!
User Lars Juel Jensen
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