Where does “Mitteleuropa” come from?

Mitteleuropa (German) comes from German Europa, from Middle High German Eurōpā, from Latin Eurōpa, from Ancient Greek Εὐρώπη, from Ancient Greek ὤψ, from Proto-Hellenic ókʷs, from Proto-Indo-European h₃ókʷs, from Proto-Indo-European h₃ekʷ- — to see; eye.

Ancestry of “Mitteleuropa”, step by step

StepLanguageWordMeaning
1GermanEuropaEurope
2Middle High GermanEurōpā—
3LatinEurōpa—
4Ancient GreekΕὐρώπηEuropa; Europe
5Ancient Greekὤψto the eye; in the face; eye
6Proto-Hellenicókʷseye
7Proto-Indo-Europeanh₃ókʷseye
8Proto-Indo-Europeanh₃ekʷ-to see; eye
Every word from Proto-Indo-European h₃ekʷ- →Every word from Proto-Indo-European h₃ókʷs →Every word from Proto-Hellenic ókʷs →