For Kastoryano (2006: 90), the concept of diaspora is more aptly applied to populations scattered prior to the making of their nation-state, such as Jews and Armenians, for whom nationalism refers to a mythical place, a territory to be recovered, a future state-building project. This more restricted meaning takes into account the extended history of diasporas who may have built their own nation-state after a lengthy period without a state, which is exactly the case of the Jews, Greeks and Armenians. Nation-states emerged only in nineteenth- and twentiethcentury Europe, and these diasporas were already in existence a long time before that. Migrations occurred often after this state-building within the former reticular space of their diaspora. But diasporas may also have emerged from the forced exile of religious or national minorities of a nation-state after its creation (e.g. the Tutsis of Rwanda, Assyro-Chaldeans or Kurds of Turkey, Tamil of Sri-Lanka, Tibetans of China). Such diasporas are organised around an unsettled nation-state problem; this is not the case of transnational communities that do not contest the home or host nation-state. A transnational community is economically oriented, and its political interest is restricted to the migration policies of both its home and host country. There is, equally, another form of transnational community in which cross-border migrants, using a network of acquaintances, are continually circulating between their home place and a variety of host places to sell goods; this kind of quasi-nomadism requires the use of another concept, as discussed below.