So because of imperialism, & capitalism, .....just go ahead & piss where you sleep?
If you do not have the BASIC infrastructure, technology and means to implement and manage basic sewer systems, etc., as a result of being raped by capitalism, then yes, more often then not you'll see extreme poverty like the pictures shown. Just take a look at Africa in general and understand the insane amount of colonialism, imperialism, and straight up rapeage of their people and land for centuries that led to the extreme poverty you see today. You cannot blame the oppressed for being oppressed and poor, you blame the oppressor!!
Many countries are stuck in some oldschool day shit because they don't have the means to advance (or are not allowed to). Before the toilet and sewage systems were implemented where did people shit in europe and early day america? In buckets. And those buckets were dumped in the streets or out their windows. So yes, there was a time when even the all powerful white man shit & pissed where he slept. Not much different.
Well, from what I see.... where I live, there is landfills full of OUR garbage, (the whole bay area is damn near built on landfill) maybe some is sent elsewhere... but theses pic show someone elses trash, not ours.
Just because you don't see it doesn't mean our trash isn't going to other places of the globe. Some of those pictures are their own trash, which as I explained is because they are poor as fuck and don't have the infrastructure, means or basic education to know any better. But other pictures, like the Nigeria one, might suggest a more sinister story. And again, just because you don't see it doesn't mean it doesn't exist, you don't have to visit Antarctica to know that there is waste being dumped there.
Anyways, it's very naive and selfish to not point at least SOME of the finger at the US when the simple fact is WE, as a country, are the most wasteful and the planet (over 20 billion diapers a year is a tiny example). In addition to that, the US has oppressed and continues to oppress poor countries through various means and it's nearly impossible for many countries to grow or advance from the shit holes they currently find themselves in.