<P> A second, though not as popular hypothesis is that the Indus script belongs to the Munda family of languages . The Munda family of languages is spoken largely in Eastern India, and is related to some Southeast Asian languages . However, much like the Indo - Aryan language, the reconstructed vocabulary of early Munda does not reflect the Harappan culture . Therefore, its candidacy for being the language of the Indus Civilization is dim . </P> <P> Scholars also compare the Indus valley script with a writing system from ancient Persia, known as Linear Elamite . The two languages were contemporary to each other . Scholars gained knowledge of the Elamite language from a bilingual monument called the Table of the Lion in the Louvre museum . The monument contained the same text in Akkadian, a known writing system, and in Linear Elamite . On comparing this ancient language to the Indus script, a number of similar symbols have been found . </P> <P> The Dholavira signboard is one of the longest in the Indus script, with one symbol appearing four times, and this and its large size and public nature make it a key piece of evidence cited by scholars arguing that the Indus script represents full literacy . </P> <P> Other languages connected to the script include Austroasiatic and Sino - Tibetan . Further possibilities include nearby language isolates such as Burushaski, Kusunda and Nihali as well as the extinct Sumerian civilization with which there was trade contact . </P>

Art of writing and script of harappan civilization