What was located outside the persian empire by the black and caspian sea

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explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.

a. the moon was locked into orbit by the earths gravity as it was passing by and capture hypothesis i think

what terms are there?