My opinion (which may differ from the other user), USA is a big market with a lot of similarities (a common language). Europe is a set of different countries wh

My opinion (which may differ from the other user), USA is a big market with a lot of similarities (a common language). Europe is a set of different countries which can be very different and do not share the same language among other things like the laws, bureaucracy, culture, etc. And there are more startups in USA, the ecosystem is more mature. I think all this factors make USA more atractive to get traction