and Iravatham Mahadevan made a meaningful effort to read the script of Indus Valley on this basis. 

Subhash Kak prepared a lot of research paper and almost solved the script of Indus Valley, but died a mysterious death a day before publishing. This was also the story of Shastri ji. 

About 400 letters of the script of the Indus Valley is believed to have some alphabets (vocal dish quantity number), some compound letters and the remaining illustrations. That is, this language is a compilation group of letters and chit scripts. No language in the world is as powerful and rich as the language of the Indus Valley. 

Left is written, similarly Brahmi script is also written from right to left. Got about 3000 texts of the script of Indus Valley. 

These have 400 characters, but 39 characters have been used 80 percent of the time. And the Brahmi script has 45 letters. Now we can mapping these 39 letters based on similarity with 45 letters of Brahmi script and detect their sound. 

On reading the script of Indus Valley based on Brahmi script, all Sanskrit words come like; Shri, Agastya, Mriga, Hasti, Varuna, Kasdev, Mahadev, Kamdhenu, Mushika, Pag, Panch Mashak, Pitra, Agni, Sindhu, Puram, Griha, Yagna, Indra, Mitra etc. 

The conclusion is that... 

1. The script of Sindhu Valley is the ancestor of Brahmi script. 

2. The script of Indus Valley can be read on the basis of Brahmi. 

3. There was Sanskrit language in those days which was written in the script of Indus Valley. 

4. Indus Valley people believed in Vedic religion and culture. 

5. Vedic religion is very ancient. 

Vedic civilization is the world's oldest and original civilization, the native of the people here was Sapta Sandhav Pradesh (Sindhu Saraswati region) which expansed Iran to all India. The believers of Vedic religion did not come from outside nor were they invaders. There were no two separate castes like Arya Dravid who had mutual war.