Original sentence: According to these writers, an ancient Tamil civilization existed on Lemuria, before it was lost to the sea in a catastrophe.Although the Lemuria theory was later rendered obsolete by the continental drift (plate tectonics) theory, the concept remained popular among the Tamil revivalists of the 20th century.As late as the 1981, the Tamil Nadu government's history textbooks mentioned the Kumari Kandam theory.Kumari Kandam () refers to a mythical lost continent with an ancient Tamil civilization, located south of present-day India in the Indian Ocean.One of the objectives of the committee was to highlight "the great antiquity" of the Tamils.They claimed Kumari Kandam as the cradle of civilization to prove the antiquity of Tamil language and culture
Edited sentence: According to these writers, an ancient Tamil civilization supposedly existed on Lemuria, before it was lost to the sea in a catastrophe.Although the Lemuria theory was later rendered false by the continental drift (plate tectonics) theory, the concept remained popular among the Tamil revivalists of the 20th century.As late as the year 1981, the Tamil Nadu government's history textbooks mentioned the Kumari Kandam theory.Kumari Kandam () refers to a supposed mythical lost continent with an ancient Tamil civilization, located south of present-day India in the Indian Ocean.One of the objectives of the committee was to highlight "the [supposed] great antiquity" of the Tamils.They claimed Kumari Kandam as the cradle of civilization to prove the false antiquity of Tamil language and culture.This claim is, of course, false