knigh+
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The rivers I'll add (probably on the second map) are (Turish name/ancient name): Merich/Maritsa/Evros (480km), Gediz/Hermus (401km), Menderes/Maeander (560km), Sakarya/Sangarius (824km).
here. I also added Bosphorus Strait and did a few pixel-size correction in the Aegean coastline.
Spoiler :
