"A more functional interpretation is that ethnic groups can provide valuable networks of trust in nascent markets. The obvious cost of such networks is, of course, that their very success may arouse the antagonism of other ethnic groups. Some 'market-dominant minorities' are especially vulnerable to discrimination and even expropriation; their tightly knit communities are economically strong but politically weak. While this may be true of the Chinese diaspora in parts of Asia today, it also has applicability to the Armenians in the Ottoman Empire before the First World War or the Jews in Central and Eastern Europe before the Second. However, because exceptions suggest themselves (the Scots were unquestionably a 'market-dominant minority' throughout the British Empire, but aroused minimal hostility), two qualifications need to be added. The first is that the economic dominance of a vulnerable minority may matter less than its political lack of dominance. It is not only wealthy minorities that are persecuted; by no means all the European Jews were rich, and the Sinti and Roma were among Europe's poorest people when the Nazis condemned them to annihilation. The crucial factor may have been their lack of formal and informal political representation. The second qualification is that, if an ethnic group is to be deprived of its rights, property or existence, it cannot be too well armed. Where there are two ethnic groups, both of which have weapons, civil war is more likely than genocide."