Clay Tablets in Ancient Mesopotamia

The clay tablets that they pulled out of the box were used five thousand years ago in ancient mesopotamia. When people lived in small groups, monetry obligations was easy. But as human societies grew larger, people needed a way to systematically keep track of who owed what to whom. It's just unbelievably magic to see these materials wrihte and then to imagine th the system that created them and the systems that they supported.