They had thousands of seals when they would trade, and they're eventually going to trade with Mesopotamia, which is incredible. And they're going to have thousands of different animal seals that they're going to be using to mark their items that are being sold. They did grow cotton, they had a lot of food sources, but they didn't have a lot of copper, a lot of iron, a lot of tin, so they would travel through the Arabian Sea up to the Persian Gulf in order to trade with Mesopotamia, and there's artifacts of both civilizations in both civilizations, so we know that to be true today. They have found a lot of artifacts that show that they had some type of goddess worship or fertility worship, and this guy pops up on a lot of their seals and their artifacts as well. It looks like a man, and he's sort of in a lotus position, which might carry into yoga and the Hindu culture, but he's fending off two animals, showing that in a sense he is tamed nature. So they obviously had some very powerful religious beliefs, and it's thought by most archaeologists and historians that the leader of the society, or leaders of the society, had some sort of divinity or religious characteristics that gave them power. But other than that, we don't know a lot about their governmental systems, other than they must have been very intricate in order to build these cities with similar grid layouts across a thousand miles of land.