1. What Contribution Did Adam Smith and John M. Keynes Make to the Study of Economics?
By preferring the support of domestic to that of foreign industry, he intends only his own security; and by directing that industry in such a manner as its produce may be of the greatest value, he intends only his own gain, and he is in this, as in many other cases, led by an invisible hand to promote an end which was no part of his intention. ... ... If one ignores foreign trade, effective demand consists essentially of three spending streams: consumption expenditures, investment expenditures, and government expenditures, each of which is independently determined. ... By keeping his atte...
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