system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does America have so much money?
gpt
Essentially the US emerged as a world power after WWI and especially after WWII. Prior to that the US was a bit of a isolationist country - hell it almost never even got into WWII officially if it weren't for Japan.

The US's late entry into the war allowed it to be spared from the massive amount of debt wracked up by all of the other major world nations of the time. 

When the war was over the US took advantage of its new found power, the USD became the benchmark currency, hence giving it and it's company's a natural advantage in commerce.

They still enjoy that advantage today, however, the weakening US presence, the reemergence of Russia and China's massive rise on the world stage (2nd largest economy, poised to overtake the US in the next decade) has the end days of US dominance in sight.