The US dollar is the world's reserve currency
So countries keep huge stores of dollars in their reserves because they need it for trade
Then what happens is the US starts the money printer to pay for US government services
This inflates the dollar and means that everyone who holds the dollar has lost value
Including Americans who are paid for their labour with dollars and do not own assets
So wealthy Americans/companies see an influx of money, asset prices rise and every other country gets poorer relative to the USA
Including Americans who are paid for their labour with dollars and do not own assets
So wealthy Americans/companies see an influx of money, asset prices rise and every other country gets poorer relative to the USA