They sold that stuff to the Brits (the £27bn in today’s money was only finally paid off in 2006).
If memory serves, the US were also supplying the Nazis at the start of the war.
I agree that US involvement was vital to winning WW2, but the idea that they won it themselves is pure American propaganda.
I’m happily oblivious much of to (I assume) US politics, so I’m going to read this as if you’re talking about Magic the Gathering.