How did Samudragupta expand the Gupta Empire?

Samudragupta expanded the Gupta Empire mainly through skilful military campaigns. He defeated many neighbouring kings across north and central India and either annexed their territories or made them pay tribute while allowing local rulers to remain in power. He combined force with diplomacy and rewarded loyal allies. His achievements are recorded in inscriptions such as the Prayāga (Allahabad) inscription, which describes his conquests and the wide area under Gupta influence.