I came across a couple of really great articles I'd like to share with you. It should be especially interesting to those interested in monetary history, world history, and politics.
For those who haven't already seen it up at Financialsense.com, there is a two part article series written by Rolf Nef entitled, "Falling Empires and Their Currencies, Part 1" and "Falling Empires and Their Currencies, Part 2".
I've read part one and I'll be rereading it before moving onto part two. Lots of interesting graphs and commentary that explains the history behind the rise and fall of nations/empires and their currencies.
Definitely give this a look.