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Contrary to common wisdom, nationalism is not a natural and eternal part of the human psyche, and it is not rooted in human biology. True, humans are social animals through and through, with group loyalty imprinted in their genes. However, for hundreds of thousands of years Homo sapiens and its hominid ancestors lived in small intimate communities numbering no more than a few dozen people. Humans easily develop loyalty to small intimate groups such as a tribe, an infantry company or a family business, but it is hardly natural for humans to be loyal to millions of utter strangers.

People went to the trouble of constructing national collectives because they confronted challenges that could not be solved by any single tribe. Take, for example, the ancient tribes that lived along the Nile River thousands of years ago. The river was their lifeblood. It watered their fields and carried their commerce. But it was an unpredictable ally. Too little rain - and people starved to death; too much rain - and the river overflowed its banks and destroyed entire villages. No tribe could solve this problem by itself, because each tribe commanded only a small section of the river and could mobilise no more than a few hundred labourers. Only a common effort to build huge dams and dig hundreds of kilometres of canals could hope to restrain and harness the mighty river. This was one of the reasons why the tribes gradually coalesced into a single nation that had the power to build dams and canals, regulate the flow of the river, build grain reserves for lean years, and establish a countrywide system of transport and communication.

None of the religions or nations of today existed when humans colonised the world, domesticated plants and animals, built the first cities, or invented writing and money. Morality, art, spirituality and creativity are universal human abilities embedded in our DNA. Their genesis was in Stone Age Africa. It is therefore crass egotism to ascribe to them a more recent place and time, be they China in the age of the Yellow Emperor, Greece in the age of Plato, or Arabia in the age of Muhammad.

nationalism still has a powerful hold even on the citizens of Europe and the USA, not to mention Russia, India and China. Alienated by the impersonal forces of global capitalism, and fearing for the fate of national systems of health, education and welfare, people all over the world seek reassurance and meaning in the bosom of the nation.