If it was caused by money injection into the U.S. economy then how do you explain inflation being a worldwide phenomenon? Quite a few experts believe a year ag

If it was caused by money injection into the U.S. economy then how do you explain inflation being a worldwide phenomenon? Quite a few experts believe a year ago that inflation was a result of imbalance in supply chains due to lockdowns. New information arises and a reevaluation of old ideas occurs. No evidence of lying as far as I can see.