I'd get my snout out of that crap by Chomsky that you're reading. You've swallowed the Marxist claptrap about capitalist plunderers whole. You have eagerly bought the leftist lie about the zero-sum world ie: because one country is rich, the other is poor. If the U.S. and Great Britain didn't exist, all the poor "oppressed" countries that exist today would still be poor. In fact if it wasn't for the nasty old capitalist countries and their technological innovations and democratic ideas, those poor oppressed peoples lives would be worse.
There have been many non-Western countries who have invaded, occupied, and enslaved other lands and people. Like the Moors, the Turks, and the Mongols for example. Why did their civilizations collapse and/or why aren't those peoples the richest most powerful peoples on the planet?