. Indo-Greek Kingdom Indo-Greek territory, with known campaigns and battles. [1] Languages Greek ( Greek alphabet ) Pali ( Kharoshthi script) Sanskrit , Prakrit ( Brahmi script) Possibly Aramaic Religions Buddhism Ancient Greek religion Hinduism Zoroastrianism Capitals Alexandria in the Caucasus Sirkap / Taxila Sagala / Sialkot Pushkalavati / Peucela Area