What is the significant difference between the class system and the systems of slavery, caste, and estate? the class system is not based on religion. the class system has fluid boundaries that allow individuals to move from one social level to another social level. the class system only works in democracies. the class system existed before the other three?

The answer is "the class system has fluid boundaries that allow individuals to move from one social level to another social level".

Social class alludes to a gathering of individuals with comparative levels of riches, impact, and status. Social mobility between classes is conceivable through training and certain openings. However, for example rural zones of India and other agrarian social orders utilize the caste framework, a shut arrangement of social stratification in which the populace is separated between genetic gatherings.

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for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.