When democratic governments came into existence, tax and food riots and other forms of protest greatly diminished. why?

Riots decreased because in a democratic government, the people choose or elect the people they want representing them. This mean that the person they choose will pass legislation that the people want - resulting in less social unrest.

Fiscal policy because it refers to the use of government spending and tax policies to influence macroeconomic conditions, including aggregate demand, employment, inflation, and economic growth.

The london company was an english joint stock company established in 1606 by royal charter by king james i with the purpose of establishing colonial settlements in north america.