Who Invented the Internet

I’m breaking my web-chastity vow with the excuse of letting you know who invented the Internet.
The question arose when i was reading the “Techo-Economic Paradigms and Latecomer Industrialization” paper (a mandatory one for my last exam next Tuesday) that states on a footnote that:

In reality, two European researchers at CERN, the large European research lab for particle physics,
invented the World Wide Web

concerning this paragraph:

While USA took the lead in the development and diffusion of digital technologies,
and especially in finding and promoting ways to derive economic benefits from its
usage, Europe is now catching up fast. By any measure, digital technologies are not
as diffused and are not used with the intensity that occurs in USA, with the exception
of mobile phones.

As I always thought that Americans were the ones who invented the web, I did a search on Wikipedia:

On January 1, 1983, the core networking protocol of ARPANET was changed from NCP to TCP/IP, marking the start of the Internet as we know it today.

but…

The collective network gained a public face in the 1990s. In August 1991 Tim Berners-Lee publicized his new World Wide Web project, two years after he had begun creating HTML, HTTP and the first few web pages at CERN in Switzerland.

Despite the latter blockquote, that seems to validate the statement of the portuguese researchers, I think that stating “europe invented the www” is a bit abusive.
I was (a bit silly) confusing two distinct concepts that AM Dias was kind enough to remind me on his comment below:
Internet is different from World Wide Web.
After this, I just want to say that: I hope to regain my intelectual abilities after my exams.