Not to mention countries like Poland and other soviet bloc nations that were the ones getting occupied, not the ones doing the occupying until VERY recently? And in saying "Europe", you're also including the non-EU Balkan states, Switzerland, the Nordics, Ukraine, Russia and depending on how you decide to split things, even Turkey?
Yet despite the MAJORITY of the nations here not being colonizers or having colonial histories, they all have all the comforts you mention in your comment, with things getting steadily better for the average Joe.
And what precisely did the glorious US manage to get with all their wealth, power and splendour, where people live in fear of ever having to go to a doctor's office lest they be indebted for the rest of their lives? Where you can get fired on the schizophrenic whims of the C-levels demanding the stones be squeezed for every last drop of blood?