Such as Nazi Germany...pesky Americans...
Do you follow history or make it up as you go along? America started on the Germans side in WWII. Which is why they stayed out of things (and also why so many Germans were allowed to flee to America to aviod war crimes charges and why America made it to the moon, it was German sci's who tortured Jews during WWII who made the space mission possible), they only got involved after Japan bombed Pearl Harbour (which they made a hash of, if Japan sent in the second bombing run America would have been crippled) and even then Americans contribution was cleaning up the mess from the party. Canada and other members of the empire played a bigger role for the Allies than America did.
And then because you went in sans weapons the French had to supply you. But sure, sure, America must have saved the world during WWII as that is what the movies will tell you. I've been lucky enough to talk to some of the people involved in the missions many American WWII movies are based on and the truth is very different.
As for my country, empire building and everything. There isn't a lot that wasn't invented in Blighty it is just a shame the gov't rarely funded it on a large scale basis. Right now you're using one of the biggest British inventions but it is only here because the American gov't would give the inventor the cash needed to make it global.
And now we're known for townies (chavs), teen pregnancy and a failing currency.