Answer:
Pictorial signs and symbols, graffiti
Explanation:
- The Indus valley also is known for the Harappan valley civilization. The first Harappan valley symbol dates back to 1875 and contains seal impression of the typical language system at the time of 3500 to 1900 BCE. The Indus inscriptions have 3700 seals and 411 distinct signs with specific patterns.
- Some scholars argue that its Brahmi script and have some connections with those of the southern Indian and Sri Lanka and is in relation to the Dravidian languages. The Discovery of graffiti and wall architecture in Indus valley shows signs of some communication many short some long.
