Definition: Keynesianism is an economic theory that emphasizes the role of government intervention in the economy to stabilize prices and promote economic growth. The theory was developed by John Maynard Keynes, a British economist who lived from 1883 to 1946. It is based on the idea that the price level can be manipulated through monetary policy, such as lowering interest rates or raising taxes, in order to stimulate consumer spending and boost economic growth. Keynesianism was initially developed during