Where does “Purvanchal” come from?

Purvanchal (English) comes from Hindi पूर्वांचल, from Hindi पूर्व, from Sanskrit पूर्व, from Proto-Indo-Aryan pr̥Hwás, from Proto-Indo-Iranian pr̥Hwás, from Proto-Indo-European pr̥h₂wós, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “Purvanchal”, step by step

StepLanguageWordMeaning
1Hindiपूर्वांचल
2Hindiपूर्वeast; preceding, previous; before
3Sanskritपूर्वbefore, in front of; ancient, old; eastern
4Proto-Indo-Aryanpr̥Hwás
5Proto-Indo-Iranianpr̥Hwásbefore, first, in front of; ancient, old
6Proto-Indo-Europeanpr̥h₂wósfirst
7Proto-Indo-Europeanper-before, in front; first; to go through
8Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Proto-Indo-European pr̥h₂wós