💡
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.