We have ample reason to suppose war has become a problem only in the past__________________years,since the invention of food-production techniques and especially centralized states.

Question

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The invention of food-production techniques and especially centralized states approximately 10,000 years ago marked a significant shift in human society from hunting and gathering to agriculture and settled communities. This led to the development of social hierarchies and the accumulation of resources, which in turn created conditions for conflict and war. Therefore, the past 10,000 years are commonly referred to as the "age of civilization" and are associated with the emergence of written records of warfare and the formation of large-scale empires.

We Have Ample Reason to Suppose War Has Become a Problem