The Declination of the Harappan Civilization

There was an earlier assumption that the earliest version of nobody has used the IIT in invasion theory for at least many decades is a strong man. But this is this statement made by the head of the Indian Archaeological Survey, then Abritisha who said Indra stands accused. He himself withdrew that statement later saying that that's not the evidence. There has been no archaeological evidence to support that the sites of the Harappan civilization were destroyed by invading armies. And for many years now, the evidence has been accumulating that it's a long drought that caused the decline of several other civilizations around the same time.