If any country over prints there money, it just lowers the value of the currency. Aka say your a very small country and only have 1 million dollars made. If there are 1,000 people in your country then the rate of what each value is worth depends on how much everyone makes. In us its like this, a loaf of bread is $1 so almost everyone can buy it to live on. The higher ups can buy premium loafs for $4+ a loaf. Now, if your in debt you need to pay it off, and say you owe me two dollars and you only have one. You got print one more off to give me. Because of that action, more money is around, so now the 2 dollars is only worth 1 still and to pay off your debts you must give me $4.