it's called modern economics built on government intervention. nation states print money to attract talent and investment. at first it was only the usa. they spent their way out of a depression and joined the winning side of a war. however the us market quickly became saturated and decadent. the market hiccups of the 70's and 80's show the usa running out of market space to expand into. indeed it was during these times that foreign investment must have become more common. in fact japan during this time scared institutions by claiming market share and almost causing the keynes race.  but in the 90's china entered the keynes race. what is the keynes race? when two countries with a manufacturing base begin to print money to try to steal the other's manufacturing. it works quite simply. if country a can pay a worker 30 an hour and country b can pay a worker 35 an hour. workers will choose country b. so country a prints more money such that a worker earns 40 an hour, and hopes that the draw of talent and investment will more than pay for the dilution. the specifics as to why china and the usa have the power to do this and other countries don't isn't super important to this question. but what is important is that they have been playing this print more money game since the 90's. which does boost the economy on paper while deflating the currency.  however it does degrade the labor and spending power of it's citizens. something china likely cares less about because the degradation of labor and consumption is spread between more than a billion. where in the usa it is spread between less than half a million. this should explain the modern love of "immigants"  anons will whine that i am defending china, they miss the point like a bunch of retarded ostriches.
United States