Although people in the eurozone want a single currency and their leaders want unity, monetary union problems create political distrust and disunity.
Why a Dollar Coin Might Not Be Money
In the U.S. the Federal Reserve tried to introduce metal dollar coins into the money supply but currency demand indicates that people prefer paper.
What Do iPhones and Pencils Have in Common?
Whether looking at the supply chain for a pencil or an iPhone 6, we see globalization because price system incentives create cooperation.