It's something that the Nazis kind of usurped and turned it into a very negative thing. But it does show this connection between that Indus Valley or that Harappan civilization and modern cultures that are in India and things like the Hindu religion. Although once again, we do not know a ton about their religion because their language hasn't survived and we cannot decipher their actual writing. But because of their organization and the consistency, relative consistency amongst these different sites that are so far flung, this is a large distance even on modern terms, but especially if we're talking about four or 5,000 years ago. Because of that, we think that, okay, there must have been at least decent government, administration, or organization at a city-state level, although we're unsure whether there was a connected empire, whether you had an organization beyond that or they all just decided to take each other's standards and symbols and brick sizes and things like that. Now, one of the key mysteries of the Indus Valley civilization is why did it end? It seemed to be this thriving civilization, perhaps the most extensive one.