In the country of rudanda, it is very hard for a person born in a particular strata of society to move to a diffesrent strata. rudanda has a low degree of

The answer is a low degree of social mobility. Social mobility means the movement of families and individuals or other classes of individuals within or among the social levels in a culture. It is a transformation in the social status which is related to one’s current social position within a specified society.

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explanation:

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the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.