I don’t understand ‘fault’ in this context. Sorry. The ‘white man’s burden’ stil

I don’t understand ‘fault’ in this context. Sorry. The ‘white man’s burden’ still lives in the western and christian subconscious, partly because it was the only known solution to the post-world-war era: “either bring the world along or watch it suicide by the false promise of communism and the result wars.” We brought the world along – sometimes kicking and screaming – but modernization benefitted everyone.
The problem is we don’t tax the world for this service, and as such we can no longer pay for it.