Messerschmitt P.1101 (Germany) ✈ Bell X-5 (USA)

Messerschmitt P.1101 (Germany), 1944. Prototype - Never flown (Wiki)

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Bell X-5 (USA). First flight: 20 June 1951 (Wiki)

[...] Later the prototype was shipped first to Wright Patterson AFB, then to the Bell Aircraft Works in Buffalo, New York in 1948. Damage ruled out any possibility for repair although some of the Me P.1101’s design features were subsequently used by Bell as the basis for the Bell X-5, which was the first aircraft capable of varying its wing geometry while in flight.
— Wikipedia
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