Countries produce stuff. Before the money was invented, we used to trade product for product. Now we have currencies. And the most powerful country of the era usually decides what currency will be valid in the international economics. Then that currency is translated into local currencies in internal economics of a country. the Ottoman Empire used to mandate gold, the US mandates dollar. EU has its own free market and mandates Euro. That’s pretty much the summary of it.
TradeSNS易之家呼吁广大网友遵守网络相关法律法规、严禁发布各类敏感不实信息；
同时TradeSNS易之家将严厉打击各类不法传播活动和违法有害信息，构建和谐的网络空间。