(SH10, ch3-q5a) Why was the foundation of the Bretton Woods system, and why did it eventually fail? What lessons can economists draw from the breakdown of the Bretton Woods system?

(SH10, ch3-q5b) Why are the sovereign debtors of the Eurozone considered to have a problem that is different from these of any other heavily indebted country outside a single currency area? What lessons can economists draw from the exchange rate experiences of the European Monetary System?

Don't answer too long, just be clear and correct.