It was not until 1856 that Robert Caldwell published his Comparative grammar of the Dravidian or South-Indian family of languages, which considerably expanded the Dravidian umbrella and established it as one of the major language groups of the world.
Det var dock inte förrän 1856 som Robert Caldwell publicerade sin Comparative grammar of the Dravidian or South-Indian family of languages, som utvidgade den dravidiska språkfamiljens utbredning avsevärt och etablerade den som en av de större språkfamiljerna i världen.