Here's another map of various northern Slavic tribes attacking Greeks which the author/illustrator stupidly calls "Hellenic races"!
One of the tricks invented by the “Magali Idea” fabricators of “Hellenism” in the early 18th century, was to call everyone (friend or foe) Greek!
So another tribe would come and decimate you and you’d say…. “Never mind… they’re Greeks too anyway!”
That’s how stupid Greeks are!