Which factor best indicator of a country’s human capital

Human capital is the stock of habits, knowledge, social and personality attributes embodied in the ability to perform labour so as to produce economic value. Human capital is unique and differs from any other capital. It is needed for companies to achieve goals, develop and remain innovative. Companies can invest in human capital, for example, through education and training, enabling improved levels of quality and production.

Explanation:

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- "a new era of american politics began with jackson's election in 1828, but it also completed a grand social experiment begun by the american revolution. nevertheless, jacksonian democracy represented a provocative blending of the best and worst qualities of american society."

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it increase by 12% a year from 1812-1820