!i!i!i!Root for the Indus Valley!i!i!i!

I really enjoyed learning about the Indus River Valley. I liked learned about that because I thought their lifestyle and way of doing things was cool. One of the cool facts about the Indus Valley was that one of their cities, Mohenjo- Daro had its own draining system and the pipes were made out of clay. Another thing is that when people wanted other things, they would trade, instead of using a currency. I wonder how long after that did people come up with the idea of currency?