Hello new boy.
I think the real reason Germany is desperate to hold onto the Euro is because they get a massive export advantage from the exchange rate at which they adopted it, currently resulting in ~50% of their GDP being exported. This has enabled them to make loads of money by flogging BMWs and Mercs to the newly-rich southern European countries who were having a fantastic Mexican party on the money they borrowed from German and French banks
So the Germans lent money to the Mexicans to buy German cars with?
