The Vijayanagar Empire was one of the most powerful empires in South India that ruled from the 14th to the 17th century. The empire reached its zenith during the reign of Krishnadev Raya, who was the greatest ruler of the Vijayanagar Empire.

Krishnadev Raya's reign (1509-1529) was marked by great cultural, social, and economic advancements. He was a patron of art and literature and his court was adorned by famous poets, musicians, and scholars. He encouraged the growth of the Telugu language and literature, and his reign is considered as the golden age of Telugu literature.

Under his reign, the empire expanded its territories and reached its maximum limits. He defeated the Sultan of Bijapur, the Sultan of Golconda, and the Gajapati Kingdom of Orissa. He also established friendly relations with the Portuguese and the Dutch, which helped him to increase trade and commerce.

Krishnadev Raya was a just and liberal ruler who cared for the welfare of his subjects. He introduced several reforms in the administration and taxation system, which helped to improve the economy of the empire. He constructed several irrigation canals and dams, which helped to increase agricultural production.

Krishnadev Raya's reign was also marked by the construction of several magnificent temples, palaces, and monuments. The famous Hampi ruins, which are now a UNESCO World Heritage site, were built during his reign.

In conclusion, Krishnadev Raya's reign was the golden age of the Vijayanagar Empire. He was a great ruler who brought peace, prosperity, and cultural advancement to his empire. His contributions to art, literature, and architecture continue to inspire people even today.