The euro. Economics or Politics.

An interview i have just listened is called "The euro : politics before economics". Stave Edwardsif i understood it currentky asked a few interesting questions. As we know, euro zone consists of sixteen counteries which the same currency.
Should Greece and Germany, for example, have the same currency? Taking into account the fact that they have so different economies. For example he tells us about dollas zone, as like US. And he points the fact that states like Alabama and California also have different economies, but they exist pretty smoothly together.
To get some more illumination speaker asks Steaven Belleys( chief economist of GFC investment; worked in Deutche Bank) a few questions, suck as: What does a common currency area like the euro zone function smootly and when does it have problems? The US has a common currency. How do differences thrtr get ironed out?
He tells us that small countries like Spain and Greece have the same problems. And all common currency areas can have problems because of different recessions, development etc. rates.


This statue was very hard for me to understand. And i have listened most of it's parts for 2 or even 3 times. And nearly 50% of words were unknown to me. Now i know that main problem of my english - lack of vocabulary. I will try to dissmiss it.