Step 1: Understanding the Significance of the Book:
"The General Theory of Employment, Interest and Money" is one of the most influential books in the history of economics. Published in 1936, it challenged the classical economic thought that prevailed at the time and laid the foundation for modern macroeconomics, especially in the context of the Great Depression.
Step 2: Identifying the Author:
The book was written by the British economist John Maynard Keynes. His ideas, collectively known as Keynesian economics, advocate for active government intervention in the economy, particularly through fiscal policy (government spending and taxation), to mitigate the adverse effects of economic recessions and depressions.
The other economists listed are known for different contributions:
Manmohan Singh: An Indian politician and economist, known for implementing economic reforms in India in 1991.
Adam Smith: The father of modern economics, known for "The Wealth of Nations" (1776).
Amartya Sen: A Nobel laureate known for his work on welfare economics and the capability approach.
Step 3: Final Answer:
The author of "The General Theory of Employment, Interest and Money" is John Maynard Keynes.