Alright, the real reason why you see terrorism in France more than others, is from what we in Denmark call the Muhammad Crisis.
A Danish satire drawing of Muhammad with a bomb was published in a Danish newspaper. The papers HQ got attacked. A small one, but still significant in Denmark.
France newspaper L’Equipe then reprinted the drawing more than once as a protest for free speech. After that France became a prime target for these kind of terrorists.
The driving terrorism in Nice, bombings in Paris and at L’Equipes HQ, it all happened after that.
This created alot of bad blood between these cultures, and that long going hate is what keeps France a prime target.