The 4.2 Kilo Year Event

India at the time was what we call the so-called Indus valley civilization, Sarasvati Sindhu civilization. India participated in a war outside of what was traditionally called India in what is now Persia or Iran. So this event happened in the 2200 BC between 22 and 78 BC. About a century after that, we have the 4.2 kilo year event. And it's probably around this time that the river stopped reaching the sea and it ended in this big lake,. which eventually dried out and it is now called the Thar Desert.