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Gajapati was the kingdom defeated by Krishnadevaraya in 1513. The Gajapati kingdom, ruled by Prataparudra Gajapati, was a powerful empire in eastern India. Krishnadevaraya, the emperor of the Vijayanagara Empire, invaded the Gajapati kingdom in 1513 and emerged victorious. This victory significantly expanded the Vijayanagara Empire's territory and established Krishnadevaraya as one of the most powerful rulers in South India.