Because the internet and everything you use every day was invented in america, the waterways are controlled by american aircraft carriers, the moon is american, the silicon you use is made in the american pseudo-colonies of japan, south korea, and taipei. America is the invisible roman empire, and the american corporate oligarchy is Caesar. Weapons systems generations ahead of the competition. All trade done in dollars, all entertainment and science conducted in english. All data flows through american megacorps that answer only to the american oligarch. Pure hegemony so strong most people aren't aware that it exists.