Feudalism flourished in western Europe between the 5th and 12th centuries. Lacking a centralized government, local lords had their fiefs. Society was caste-bound: strictly structured hierarchically.
The culmination of urban and computerized civilization is a level of rudeness unsurpassed in human history, short of armed conflict. Nowadays, human capacity for empathy is snuffed between strangers when the nature of contact is a request, no matter how politely put, to be respectful of others.
The birth rate boomed across the industrialized countries that fought in the second world war: Germany, Japan, Britain and the United States, though the birthing take-off took off at different times. The war’s only tangible victor, the U.S., had particularly fervent fertility. The boomer generation was not as prosperous as they were proliferant. But they made themselves so by readily robbing the next generation.
Competition is an evolutionary artifact for humans, who would be much better off as a species practicing cooperation instead. The Olympics are an epitome of supposedly innocent competition. Those involved, as competitor or spectator, enjoy the rushes of adrenalin and dopamine involved without question. Along with shots of biochemical stimulation come concomitant emotional complexes: of assumption, pride, and suspicion.
The mirror mechanism is a part of intelligence systems; stimulated when an animal acts or observes another performing the same action. Many animals have mirror mechanisms, including birds and primates. The mechanism provides the basis for empathy, as well as driving status-seeking.