So the requirement actually is that you do something of value or you will not be granted anything. You either have to work hard to be a better candidate for jobs ( by taking courses for instance) or help the community by doing volunteer work.
"Opera" might be debatable though, since other countries like China also have their styles own operas which have existed for a long time.
First audio came in 1900 by Fessenden.
So there's a lot of names to mention if proper credit is to be given. Marconi is globally most well-known since he was brilliant both technically and commercially, turning the spark detector into a mass medium, and selling a radio station even to the Pope.
I did type universities at the end, but thought no way that can be it, that would be weird. but well there arent that many places that have to do with learning.
I think even window crossed my mind..
You know what Italians did invent, though? Published music. The Odhecaton by Petrucci, 1501. BAM!