The End of the Age of Agriculture
The domestication of animals is believed to have begun 13,000 years ago. However, with crop cultivation 9,000-10,000 years ago, a large majority of the population was required to be bound to the land. Cultivation leads to the first continuously settled villages and to civilization itself.
Security and continuity, rationalized by predictable food production, originated specialized political, civil, religious, and military institutions. Institutionalizing a warrior class was the most dangerous necessity of this social sea change. If the military were not directed outward, it would threaten the stability of the non-military institutions. Thus, a constant state of war became inevitable, and indeed the history of city-states and empires appears to confirm perpetual states of war.
The feasibility of escalating war has become absurd with the advent of strategic bombing and nuclear weapons. No military institutions can claim to guarantee security of territory.
Moreover, at the end of the age of agriculture only a minute fraction of the population is required to produce the current surpluses of food and thus the fundamental assumptions of the age of agriculture, occupation of territory as the means to secure food production, must be revised to the era of global vulnerability.