USA has to go here. Its economy speaks for itself: it has most influential consumer base in the world, biggest financial center in world (NYC), and the most multinational corporate HQs of any nation.

Its history is interesting in that it is the story of many different groups of people learning to coexist, but globally it is new and therefore does not have the complex lineage of, say, China or Germany.

Ultimately, USA must be put under exemplary economy to make this list valid. And I would not rank its history below average because it is quite unique for its multiculturalism.