USA may have been the power (business and militarily) hegemon of the world since WW1 but the description falls down in it's cultural influence.
Western Europe is the wider cultural influence which comes from the spread of earlier times of France, Spain and Great Britain and why South America, Africa and much of Asia in many ways look to Europe - the historical trade and communication routes have been there for centuries.
This is why the USA (republicans especially) has a reputation for being insular and self serving. Actually given it's awesome power I believe it has been quite benign militarily speaking and I believe its British background roots has a lot to do with this.
It is still a relatively young culture - as Disraeli said to an Englishman who made anti-jewish comments "3000 years ago when your ancestors were painting themselves blue and running around half naked, mine were building Solomon's temple."
The western world is steadily dropping the Christian religion as a major influence; the USA is a little behind the rest in this. Possibly because many there still believe its success stems from it.
I don't think Trump will be your next President.