Sir John Glubb - The Fate of Empires.
‘The influx of foreigners’: He observes that one frequent phenomenon in the decline of cities is the influx of foreigners. Foreigners are attracted by affluence, & take on jobs which often the citizens do not want to do themselves
But they can be weak links in the society for various reasons, such as: they will be less willing to sacrifice their lives and property for the nation and they form communities of their own that protect their own interests above that of the nation.
@Europaeum
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