Hearing Andrew's words, everyone present was surprised, especially the emperor and Arturios. Even Demon who, despite being in the shadows, although he was already discovered, was surprised.
The black forest where the Amazons live is in the middle of the empire of Cannaris and the kingdom of Tampilla, so it is impossible for these two countries not to have information about them.
Certainly, the Amazons are powerful, but there is no place in the world that remains hidden from everyone. Even Andrew's Heavenly Palace is not invulnerable, of course, knowing about them and knowing everything about them are two different things.
Furthermore, although they have contact with the Amazons, it is purely commercial and only on the part of merchants who transit between both countries, so it could not be called a friendly relationship, only casual acquaintances.
