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why could the serious financial woes of some eu member states lead to the end of the euro?
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the euro is a common currency between various countries in europe.  this means that individual countries give up their traditional sovereign control of their own currency, and cede that control to the eu. such a system has many advantages, but it also means that individual countries cannot deal with their unique situations as easily.  for instance, if the us were a part of the eu, then the fed couldn't issue $600b the way they are to bolster the economy. the danger to the euro is that countries will withdraw their participation in order to micromanage their economies more effectively.  if a major country withdraws its participation, it could start a domino effect where many countries withdraw so that they too can manage their economies more effectively.  as more countries withdraw, a shared currency becomes less and less appealing.
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