If you read enough old books you'll notice that the authors ascribe a general temperament to each European nation. The word temperament today is not in common u

If you read enough old books you'll notice that the authors ascribe a general temperament to each European nation. The word temperament today is not in common use except in animal breeding and the nearest equivalent we have today is the word stereotype, which captures some but not all of the meaning. Here is a formal example of what I mean: http://i.imgur.com/r3bom1c.jpg http://i.imgur.com/r3bom1c.jpg http://i.imgur.com/Qen8lBA.png http://i.imgur.com/Qen8lBA.png While some of this is hilariously old fashioned or historical period specific, it is also interesting just how many traits are consistent enough that we recognize them centuries later. This could be astrology or tea leaf reading, but I think it merits a genuine scientific investigation. It may be anecdotal but far too many people agree the Italians are very fond of chatting, including the Italians. All of this is to say, while it is true that Islam is dominant in countries where periodic religious warfare breaks out, it is possibly Islam is derived from collective temperament and not the other way around. It should definitely be treated seriously as a hypothesis.