Of course you would dispute the airplane- that's the Brit way.

Michaelangelo may have drawn an airplane, but he didn't build, climb into one, and fly it. Same for any of your countrymen. Now Otto Lillienthal might have, but no irrefutable proof has been found- and anyway, he was German (grandfather of Kurt Tank).
I know the steam engine was British, but did the Brits put it on a train first (Tom Thumb)? Or a boat (Robert Fulton)?
I'll give you dynamite, and smallpox- didn't check.