til Eritrea 🇪🇷 comes from the latin name for Red Sea (Erythraeum mare)!
this is oversimplified but
PIE hrewd
> heruth-ros (e added after h)
> Greek eruth-ros (h dropped)
→ Latin erythra-eus
→ Eritrea
PIE hrewd
> raud (h dropped)
> Eng red
so the “rit” is equivalent to english’s “red”!