Political map of the Gupta Empire around 375, during the reign of Samudragupta.
Sources used:

.mw-parser-output .smallcaps{font-variant:small-caps}Agrawal, A.; 1989: Rise and Fall of the Imperial Guptas, Motilal Banarsidass, ISBN 8120805925.
Kulke, H &amp; Rothermund, D.; 2004: A History of India, Routledge (4th ed.), ISBN 0-203-39126-8.
Stein, B.; 2010: A History of India (2nd ed.), Blackwell, ISBN 978-1-4051-9509-6.
Own work
Woudloper