it's so simple
a certain country has knowing if printed too much money without determining many another economic aspect that related to inflation is possible to create a catastrophe in its national currency. those must be balanced, between its national currency vs dollar. it looked to make sense why we don't print out money to fulfill the gap of national income deficit. in fact, in international trading we using the dollar for payment methods, the dollar can be printed (except the USA), It can be gained by the export activity and the imports. so dollars come and the let the long economy mechanism so the dollars cash into country income. if doesn't well considerate hyperinflation are near to happen.