In the general theory of employment , interest, and money, john maynard keynes argued that to eliminate depression governments should spend what?

In the general theory of employment , interest, and money, John Maynard Keynes argued that to eliminate depression governments should spend more to offset insufficient private spending. This British economist deployed the idea of Keynesian economics according which equilibrium employment (income) is determined by the level of aggregate demand (AD) in the economy, given the level of aggregate supply (AS).

The  ancient egyptians  who  built the pyramids  may have been  able  to move massive stone blocks across the desert by wetting the sand in front of a contraption  built  to pull the heavy objects