Anew school of classical theory called monetarism was launched by in the late 1940’s and expanded in the 1950’s..

Milton Friedman

Explanation:

A new school of Classical Theory called Monetarism was launched by Milton Friedman in the late 1940’s and expanded in the 1950’s.

i'll just take the points xd

the technology changed agriculture in an impacting manner since many people left the field work by a cellular or other technological appliances