The attribute which allowed for trade to thrive in all three Muslim Empires was the access to transatlantic sea routes. Hence, option A is correct.
All the three Muslim Empires in the world during the earlier periods were heavily dependent on trade as their primary occupation. As a result, a lot of Muslim population were involved in merchant activities.
The success of trade in the Muslim Empire was largely because of the easy access to the sea routes, which enabled trade connectivity throughout the different parts of the world.
Hence, option A holds true regarding the Muslim Empires.
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