Länsi-Eurooppa (Finnish) comes from Finnish Eurooppa, 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 “Länsi-Eurooppa”, step by step
Länsi-Eurooppa traces back through two separate lines of ancestry.