There is no evidence that literature is the only one to analyze the origin of a language. The time of the literature is to be determined. The inscriptions play an important role in exploring anthropology. But inscriptions do not always tell the whole truth. So we need great attention to studying inscriptions. Archaeological excavations such as underground can be explored by the Tamil myths found in other countries. These are all evidence that Tamils have made maritime trade. It will also be examined in what periods are captured. This kind of research is conducted in the field of Tamil. The Tamil seat in Harvard University has been set up to do these things.