So the answer was no you couldn't provide any sources to substantiate your claims as we were talking about the Eurozone not the EU.
Some helpful links for you https://en.wikipedia.org/wiki/Eurozone, https://en.wikipedia.org/wiki/European_Union
As for the EU, once again you may have overlooked...
You have a strange habit of complaining about certain types of arguments/opinions (from only one side) then indulging in exactly the same behaviour. :p
The Eurozone is a bigger internal market than the US?
Eurozone richest market in the world?
Eurozone ranking first in inbound and outbound international investment?
Any sources to back up those assertions?
The Eurozone offers us a future where our second tier EU membership is at the whim of...
Those cards being a stagnating trade block with shrinking influence,importance, Eurozone in perpetual crisis, numerous political tensions amongst members states, migrant crisis fuelling those tensions ... basically a lot of instability and uncertainty. It will be in all our interests to come to...