This thesis deals with the sociopolitical consequences of development projects supported by migrants for the benefit of their village of origin. Drawing on the example of Moroccans coming from the Southern Morocco (a predominantly berber area that includes the Atlas Mountains in the East, and the valleys of the Souss and the Massa in the West), I have sought to understand, on the one hand, the building process of a transnational space, and, on the other hand, the behaviours of public authorities toward this space: states, municipalities and local authorities. I have worked on the conditions of appearance of this transnational space. From a European point of view, I have described the different types of networks, either social or associational, which enable the migrants to think here the development there. Finally, I have analysed the different funding policies supporting the project and which enable states to use transnational resources to improve their territorial infrastructures.
