The Ahom script or Tai Ahom Script, is an abugida that is used to write the Ahom language, a dormant Tai language undergoing revival spoken by the Ahom people till the late 18th-century, who established the Ahom kingdom and ruled the eastern part of the Brahmaputra valley between the 13th and the 18th centuries. The old Ahom language today survives in the numerous manuscripts written in this script currently in institutional and private possession. History The Ahom script was probably ultimately derived from the Indic, or Brahmi script, the root of almost all the Indic and Southeast Asian abugidas. It is probably of South Indic origin. The Brahmi script spread in a peaceful manner, Indianization, or the spread of Indian learning. It spread naturally to Southeast Asia, at ports on trading routes. At these trading posts, ancient inscriptions have been found in Sanskrit, using scripts that originated in India. At first, inscriptions were made in Indian languages, but later the scripts were used to write the local Southeast Asian languages. Hereafter, local varieties of the scripts were developed. By the 8th century, the scripts had diverged and separated into regional scripts. It is believed that the Ahom people adopted their script from either Old Mon or Old Burmese, in Upper Myanmar before migrating to the Brahmaputra Valley in the 13th century. This is supported based on similar shapes of characters between Ahom and Old Mon and Old Burmese scripts. It is clear, however, that the script and language would have changed during the few hundred years it was in use. The Lik Tai script featured on a 1407 Ming dynasty scroll exhibits many features of the Burmese script, including fourteen of the nineteen consonants, three medial diacritics and the high tone marker. According to the scholar Daniels, this shows that the Tai borrowed from the Burmese script to create their own script; the Lik Tai script was derived from the Burmese script, as it could only have been created by someone proficient in Burmese. Daniels also argues that, unlike previously thought, the Lik Tho Ngok script is not the origin of the other Lik Tai scripts, as the 1407 Lik Tai script shows greater similarity to the Ahom script, which has been attested earlier than the Lik Tho Ngok script. Other "Lik" scripts are used for the Khamti, Phake, Aiton and Tai Nuea languages, as well as for other Tai