Q. Taxila was the capital of which ancient Mahajanpada ? Answer:
Gandhara
Notes: "Gandhara" was one of the 16 mahajanapadas, located in the northwest region of ancient India, roughly corresponding to present-day eastern Afghanistan and northern Pakistan. Its capitals were Kapisi (Bagram), Puṣkalavati (Charsadda), Puruṣapura (Peshawer), Takshashila (Taxila) and Udabhandapura (Hund)