@romalops - I don't think Angular is designed to be integrated with Laravel or any other backend framework. Unlike VueJs it should not be used inline. Create an API in Laravel/Lumen then install Angular in a separate domain using the CLI and connect to your API using the HTTP service. You will have to learn about CORS and token based authentication.
So what other concepts should I learn to combine VueJS (Or ReactJS) to Laravel ? In this case, is it safe to use these both component in the same "app" ?
@romalops You would normally choose one and not combine both. Vue is the recommended JS framework for Laravel and there are quite a few videos here on Laracasts. I would suggest you start there and perhaps ignore ReactJs and Angular for the moment.
@CJJ - I think I missed one thing. In which context do you separate these two framework (We are now talking about VueJS and Laravel) ?
I mean, how do you imagine two app (one in my folder "myApplication-backend-laravel" and one in my folder "myApplication-frontend-laravel") ?
Or is it only a basic route "/" returning the view (in the "resources/view/index.html" containing ViewJS that will make all the requests (Ajax) to the RESTFul API of Laravel and then sending informations (in json format I guess) back to VueJS ?