In this contribution I intend to deal with the question about the origins and the features of the human capacity to evolve cooperative activities and institutions that is normally called we-intentionality. As humans cannot evolve this capacity without having been integrated in already given social collaborative activities we are forced to put the focus on the interdependence that is established between individual participants and the objective cooperative environment for explaining what cooperation is. I will treat this interdependence as ontologically constitutive for having cooperative activities in general and also for evolving high developed institutions like states and nations. Eventually I will deal with the notion of belongingness and consider it as more constitutive of that of commitment that is typical in contract-centred theories.