Here's why this is an interesting book.
Most Americans' frame of economic history reference is less than 100 years old. There's a lot of still valid historical economic points about credit, interest, money expansion, default and bonds from the last three thousand years or so.
It's not irrelevant!
This book covers lending and credit from Sumer through the Roman Empire, Middle Ages, and modern history. It can be hard to find these kinds of overviews!
In fact, as sovereign debt becomes the story du jour, read up to see how past cultures responded to default, high interest rates and policy responses of governments.