Under the rule of the Vijayanagar empire, irrigation became prominent. The development of irrigation took place mainly during the rule of Deva Raya I. New tanks were built and dams were constructed across the river Tungabhadra.
The Tughlaq dynasty was a Muslim dynasty of Turko-Indian origin, which ruled over the Delhi sultanate in medieval India. Ghiyasuddin Tughlaq is considered to be the founder of the Tughlaq dynasty.
After the death of Gujarat Sultan Qutb-ud-dín Ahmad Shah II, the nobles raised his uncle Daud, son of Ahmad Shah I to the throne. He reigned over the Gujarat Sultanate from few days in 1458 CE.
The Vijayanagar empire which was established in southern India in 1336 by two brothers Harihara I and Bukka Raya I had a well-organized administration. King has the absolute authority in legislative affairs during the Vijayanagar empire.