first stored program computer yes in the early days Europe contributed quite a bit, since the 1940's practically nada and they are still playing catchup. Computers have become practically an American monopoly. Though regretably we no longewr build them here, just design them.
the discovery of the structure of DNA? 50 50 on that one, James Watson was an American studying in Cambridge at the time.
The jet engine? The Ramjet UK 1930's, I'll grant you that one and the Germans flew the first operational one the ME 262. What have you done with it since then ?
The helicopter? Igor Sikorsky (US) (born in Russia) 1931.
Antibiotics? Though Flemming discovered pennicilin most antibiotics since then have been developed by American pharmaceutical companies.
The first satellite in space? The first man in space? Robert Goddard (US) is considered the father of modern rocketry from which all work on modern rockets emanated.
The compact disc? I will grant Philips of Netherlands that, but they haven't done much since that contribution.
Test-tube babies? OK we'll grant you that one.
Controlled nuclear fusion? Where ? Controled sustainable fusion? Sorry, but blasting hydrogen with a laser doesn't cut it.