Laissez-Faire is an economic policy that says governments should not interfere with the free market; let the market develop on its own.
The correct answer is World War II
Following World War II, the United Nations were found with a goal of preventing such monstrosities in the future.
The CPI is important for determining the changes in the prices paid by a urban consumers on a wide range of consumer goods. It gives a good sense of the fluctuation in pricing over a period of time.
It’s A Because In History There Was War Cause Of There Believes