The correct option is A True
Until the 18th century, the Naduvazhi Swaroopams continued without much change. By the second half of the 18th century, the Sultans of Mysore, Hyder Ali and Tipu Sultan led military campaigns which created a frenzy among the Naduvazhis of northern Kerala. Nediyiruppu, Kola and other smaller Swaroopams quickly came under the Mysore Sultans.