What no theory does to a mf.
No, this isn't trickle down economics. It's called superprofit/super exploitation, a marxist concept. The West™ in general, but a few powers specifically (subject of our discussion here, the USA in particular) have enforced extremely brutal oppression in the global South. This has kept the global South from developing competitive or even self-sufficient industry and reliant on imports. This gives American firms a massively unfair advantage, one which is used to placate the American working class so they don't develop solidarity with the global South. Throw in some bog standard racism and you've got a stable empire of misery. It's classic divide and conquer tactics, same used to pit managers/white collar workers and more blue collar or service workers against each other. Let some people feel superior to others, and they'll be so busy looking down they won't mind the boot on their back standing above them.
There's a rich body of theory here (which you are plainly ignorant of) but I would recommend reading about the phenomenon of unequal exchange by Jason Hickel
https://www.sciencedirect.com/science/article/pii/S095937802200005X
It's a good starting place for understanding how wealth is extracted from the south for the north.
Unfortunately for all of us, Capitalism has a long-term rate of profit problem. Even with super exploitation profit falls in the long run. To maintain their power and the rate of profit the capitalists begin ripping out and further oppressing the once (relatively) privileged working class of the north too. That's why social safety nets are being torn to shreds and constantly under attack, and gains in quality of life/life expectancy have either stalled or regressed in so called "rich" countries.
We say "workers of the world unite" for a reason. It's a global struggle.
Stupid tankies asking for sources. That's basically thought police - aren't you bozos supposed to hate the police? Hahahaha gottem.