Where does “Zaporozhye” come from?

Zaporozhye (English) comes from Russian Запоро́жье, from Russian поро́г, from Proto-Slavic porgъ, from Proto-Balto-Slavic parˀgas, from Proto-Indo-European porg-o-.

Ancestry of “Zaporozhye”, step by step

StepLanguageWordMeaning
1RussianЗапоро́жье—
2Russianпоро́гthreshold, doorstep
3Proto-Slavicporgъthreshold, doorstep
4Proto-Balto-Slavicparˀgas—
5Proto-Indo-Europeanporg-o-—
Every word from Proto-Indo-European porg-o- →Every word from Proto-Balto-Slavic parˀgas →Every word from Proto-Slavic porgъ →