That highly depends on what you mean by "Greece the country". When the Greek mythologies about the Amazons were written, there was no "Greece the country". Greece didn't become a country until thousands of years later. Hell it didn't even stop being part of the Roman Empire until the 1400s.

We could have a long debate about whether the modern country of Greece has any relationship to the ancient Greek city-states, but I think that's entirely beside the point.