Macroeconomics First Developed as a New Subfield of Economics

Multiple Choice

Macroeconomics first developed as a new subfield of economics

A) when Adolph Hitler ordered economists to learn more about national economies.
B) following the oil price increases of the 1970s.
C) as a result of Adam Smith's publication of The Wealth of Nations in 1776.
D) in response to the severe economic hardships of the Great Depression.
E) when the Bank of Canada was established in 1921.