" This connectivity lets urban Somalis tap into global networks for the exchange of money and information, allows them to engage in trade, and lets them pursue legitimate business (such as mobile phone companies).37 Of course, people who live in rural areas without cellphone coverage can’t access these connectivity-enabled overseas sources of support. Thus, greater access to global systems of exchange—something that’s available only from well-connected urban locations—has become a major reason for people to migrate to cities, increasing the pace of urbanization. "

― David Kilcullen , Out of the Mountains: The Coming Age of the Urban Guerrilla