Adam Smith is considered the father of modern economics. He is best known for his book The Wealth of Nations, which was published in 1776. In this book, Smith argued that the free market is the best way to organize an economy. He also developed the theory of comparative advantage, which explains why countries trade with each other.
Thomas Malthus was an English economist who is best known for his work on population growth. He argued that population growth would always outstrip the growth of food production, leading to poverty and starvation.
Lionel Robbins was a British economist who is best known for his work on the definition of economics. He argued that economics is the study of how people make choices under conditions of scarcity.
Alfred Marshall was an English economist who is best known for his work on microeconomics. He developed the theory of marginal utility, which explains how people make choices about how to spend their money.
In conclusion, Adam Smith is considered the father of modern economics because of his work on the free market and comparative advantage.