How many major political centers were there in the Mauryan Empire?

Five

The Mauryan Empire was characterized by five major political centers - the capital Pataliputra and the provincial centers of Taxila, Ujjayini, Tosali, and Suvarnagiri. As evident from the inscriptions of Asoka, the same message was engraved across these regions, spanning from present-day North West Frontier Provinces of Pakistan to Andhra Pradesh, Orissa, and Uttarakhand in India.