Answer :
The first economist to describe the process that turns self-directed gain into social and economic benefits for all was Adam Smith.
Adam Smith was a Scottish philosopher and is widely regarded as the first modern economist. Smith defined economics as "the search for the nature and causes of national wealth."
In 1751, the Neapolitan philosopher Ferdinando Galliani published an almost exhaustive treatise on money entitled De la Moneta (On Money), twenty-five years before Adam Smith's Wealth of Nations.
The central economist thesis of Smith's Wealth of Nations is that our need to realize our individual self-interest leads to social gain. He called the force behind this accomplishment the invisible hand.
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