The main reason why democracy is called a government by discussion and persuasion is because the "majority opinion" of the voting base makes up policy at the state level, and in order to shift a majority opinion it often requires large amounts of debate and discussion of the issues at hand.
Samurai served their Shogun.
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Surplus food leads to job specialization because not every one needs to be farming. THis leads to some people being able to take up other things, such as metal work. ... Domestication led to farming, which led to surplus food, population growth, and job specialization, which all lead to civilization.
The hypothesis suggesting that menopause constitutes a value and assumes that older women increase their genetic interest and social networks by investing in their grandchildren. This was built from the “mother hypothesis” which is now termed as “grandmother hypothesis”. To put it simply, as mothers age, they invest their energy helping their offsprings in their reproductive efforts.