The law of supply and demand applies to this. The more money the country has in circulation, the higher the demand for most goods becomes because everyone has money to spend. And when it happens, the price of goods increases and that's one sign that the inflation rate increases as well. If you look at the Fed adjusting interest rates, that's how they control inflation so that people will borrow money, stop spending money, and so on. That's why the supply of money and printing more of it has always been the consequences that all of us will bear.