What happens if they throw them out of EU?
I'd think they'd remain in the EU, just not in the Eurozone.
But essentially, that's the million dollar question nowadays. Greece would actually get a currency that reflects their economic capabilities, has a lot of onseuquences, some good, some bad, but no one can really claim to know exactly what will happen.
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In a nutshell:
1. Greek exports would rise
2. Greek consumption of domestic goods would rise
3. Greek inflation would be much higher
4. Greek debt would be much higher effectively (they're mostly in Euro)
5. Greek purchasing power would be much lower.
But the overall effect largely depends on the extent of each of these consequences, the reaction of the people, consumers, investors, politicians, economic development of Europe and the world as a whole,...