The answer is cultural diffusion.
Mesopotamia introduced a more sedentary way of life by means of agriculture and animal husbandry. So for example, instead of the nomadic way of life, which is/was going hunting, foraging, and/or fishing.
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The federal government spends more than $20 billion a year on subsidies for farm businesses. About 39 percent of the nation's 2.1 million farms receive subsidies, with the lion's share of the handouts going to the largest producers of corn, soybeans, wheat, cotton, and rice.1
The government protects farmers against fluctuations in prices, revenues, and yields. It subsidizes their conservation efforts, insurance coverage, marketing, export sales, research, and other activities. Federal aid for crop farmers is deep and comprehensive.
However, agriculture is no riskier than many other industries, and it does not need an array of federal subsidies. Farm subsidies are costly to taxpayers, but they also harm the economy and the environment. Subsidies discourage farmers from innovating, cutting costs, diversifying their land use, and taking other actions needed to prosper in the competitive economy.
The answer is:
- Some civil rights pertain to discrimination by private citizens.
- Some civil rights pertain to discrimination by government.
- Private discrimination can become unlawful only if a legislature passes a law making the discrimination unlawful.
For example, the civil rights that are pertain to discrimination by private citizens is the equal employment act, which banned the private sectors from rejecting employment application based on gender, race, and religion. The civil rights act of 1964 was pertain to discrimination made in jim crow laws (which initiated by the government) .