Classical economics is more of a right wing take on the economy. The essential belief behind it is that markets will sort out themselves when in trouble. Classical economists don't believe that...
Supply-side economics focuses on increasing overall supply (goods and services produced) in the long run. This is done by increasing the availability of capital, labor, and technology. Keynesian...
One of the main critiques is on say's law, which is that supply creates its own demand. In a nutshell Keynes was able to explain the great depression by saying that demand creates supply. This is...