Why did every country have its own currency?

Countries rely on various economic tools to direct their plan for economic growth. Each country has an individual set of needs and wants that should be satisfied. However, with a global currency, this customizable economic plan is impossible. A single monetary union that serves a single interest to all the world is impossible. read more

Actually, not every country has its own currency system. There are examples like the Euro where multiple countries use a single currency they created. read more

In case of Europe, if every country would have had a different currency, the trade amongst countries would get cumbersome and increasingly complex. This led to the formation of EUROZONE which is a consortium of 19 of the 28 European Union states. read more