According to Mahabharata's list of kingdoms given in Bhishma Parva, chapter-9, Pandu Rashtra, Gopa Rashtra, Malla Rashtra and Ashmaka together formed the modern Maharashtra. The term Goa is derived from Goparashtra i.e.
The Mahabharata lists the kingdoms of Pandu, Gopa, Malla, and Ashmaka as forming modern-day Maharashtra. The name "Goa" originates from Goparashtra.