because of the greatness of their empire many things were brought to them from foreign countries,
Surely there would be a record of trades to a place called Atlantis if that were the name.
That's one of the inherent weaknesses of the tale, doby—at least, if one is trying to approach it as real history. No empire of the ancient Mediterranean world was anything close to that size till the Romans came along. And no empire, period, existed 9,000 years before Solon.