Better than being forced to speak Japanese, as we would have without the Yanks.<quoted text>
Totally. During the Battle of Britain (10 July 31 October 1940), The Luftwaffe was so decimated that Hitler cancelled the invasion of England (Operation Sea Lion).
The USA didn't enter the war until over a year later (December 11, 1941).
We actually only saved the French from speaking German... again.
BTW, English is already (and always has been) a Germanic Language.
We did have a friendly invasion of American serviceman in those days, who were said to be "overpaid, oversexed and over here". It changed my country a lot.