The European Union

this is the map of The European Union,but UK do not use euro。Know in the European Union , here have been twenty-seven EU member states.But we can not use the visa of UK for traveling to the other EU countries,so we should have new visa of EU for traveling.One reason why UK do not use the euro is UK do not want to controlled by EU and the other reason is there are many poor countries,as the member of the euro used countries,they have responsibility to help the poor countries.