The web browser which actually made the web usable and popularized it was Mosaic.
"Mosaic was developed at the National Center for Supercomputing Applications (NCSA) at the University of Illinois at Urbana–Champaign beginning in late 1992." -- Wikipedia
Other than Linux's European origin, Europe has not produced any viable operating system or browser. It continues to rely on key software of American origin, like the rest of the world.
This is one of those "pizza was invented in New York City" arguments. Popularized and refined != invent.
The Brit Tim Berners-Lee designed the architecture, wrote the first browser and web server, and wrote the first HTML spec at CERN around 1989. Mosaic was released in like 1993 after Berners-Lee released his specs and source.
To claim the internet was invented in Europe is equally absurd.
"Mosaic was developed at the National Center for Supercomputing Applications (NCSA) at the University of Illinois at Urbana–Champaign beginning in late 1992." -- Wikipedia
Other than Linux's European origin, Europe has not produced any viable operating system or browser. It continues to rely on key software of American origin, like the rest of the world.