Democratic Systems

"The common experiences of European history - feudalism, the Renaissance, the Reformation, the Enlightenment, the French revolution, the Industrial revolution; they are generally economically better off than the peoples to the east, and they may now look forward to increasing involvement in a common European economy and to the consolidation of democratic political systems. the people to the east and south of this line are Orthodox or Muslim; they historically belonged to the Ottoman or Tsarist empires and were only lightly touched by the shaping events in the rest of Europe; they are generally less advanced economically; they seem much less likely to develop stable democratic political systems" - Clash of Civilisations

Now comes a new argument - that the demography of a country's population(age) is also a factor for the success of a democratic system:

Very young populations contribute to strife, study says

Africa's crisis of democracy, with Nigeria at forefront