Historically France is a ground of immigration, contrary to Germany for example. Because France knew a continuous immigration since old times. Recent immigration was carried out in two large waves diametrically opposite: the first (middle 9th century at 1939) was European, Christian mainly, therefore very quickly comparable: they are today of the French (!). The second (South-North: Africa, Southeast Asia) on the other hand brought with it various religions (Islam, Buddhism, etc) and several cultures and remains not easily comparable to the French culture. The second immigrants thus remain confined in the practices oft heir countries of origins, often accentuated by their religion. However France, crucible where multiple nationalities mix with, intends itself to be creative of a single identity, in spite of the always possible multiplicity of the alternatives: the French identity of which are legitimately proud those which agree to be integrated into a company which entirely respect them if they are able to make sorne in the same way in return. Obviously, the immigrants of the South have evil to find their place in France. That creates cleavages due to non the respect of the laws and difficult acceptance by sorne of the French culture. If the immigrants manage to exceed the cultural and religions barriers, by respecting secularity, they will be melted in a company able to respect their beliefs and will live in harmony. My matter is to study the slow process ofintegration which was established and which plays its part to the rhythm of difficulties which, little by little, arise and will find their solution, even if the social body must take more time than usually taking into account the importance of the problems to be treated: a humanistic challenge for France. My matter is to consider how she will manage to face it and to solve it.