During his rule, Tipu Sultan laid the foundation for a dam where the famous Krishna Raja Sagara Dam across the river Cauvery was later built. He also completed the project of Lal Bagh started by his father Hyder Ali, and built roads, public buildings, and ports along the Kerala shoreline. His dominion extended throughout North Bangalore including the Nandi Hills, Kanivenarayanapura, and Chickballapur. His trade extended to countries which included Sri Lanka, Oman, Afghanistan, France, Turkey, and Iran. Under his leadership, the Mysore army proved to be a school of military science to Indian princes.