The provinces of Afghanistan. Many of them STILL retain older Sanskrit names:
Balkh = Bahlika
Nangarhar = Nagarahara
Kapisa = Kapisa
Laghman = Lampaka
Kabul = Kubha
Badakhshan = Dvyakshayana
Ghor = Giri
Bamiyan = Varmayana
Wardak = Vartaka
The names of all these places are found in ancient Sanskrit literature.
True Indology 