A unified currency makes economic sense, but trade efficiency is only one motive for many governments.
A single common currency makes sense money wise.
No state is ever motivated by efficiency of trade.
A boy with a red shirt wields a bow.
A couple of people are outdoors.
The fire storms a coming, he whispered in the night.
He is printing money.
In open areas and in cages, it has all manner of tigers, jaguars and lions.
A group of people gathered in a small park some sitting on benches and other lounging on the grass outside.