what is the origin of the subject mentioned above?
It originated in moral philosophy, to explore the administration of states' wealth, with "political" signifying the Greek word "polity" and "economy" signifying the Greek word "oikonomía" (household management)..
Political economy
 As a discipline, political economy originated in moral philosophy, in the 18th century, to explore the administration of states' wealth, with "political" signifying the Greek word "polity" and "economy" signifying the Greek word "oikonomía" (household management).
who was harold innis? He was a professor and an author. what subjects did he teach? Political economy. in which university did he teach? University of Toronto.
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Political economy [SEP] Introduction
Political economy is the study of production and trade and their relations with law, custom and government; and with the distribution of national income and wealth. As a discipline, political economy originated in moral philosophy, in the 18th century, to explore the administration of states' wealth, with "political" signifying the Greek word "polity" and "economy" signifying the Greek word "oikonomía" (household management). The earliest works of political economy are usually attributed to the British scholars Adam Smith, Thomas Malthus, and David Ricardo, although they were preceded by the work of the French physiocrats, such as François Quesnay (1694–1774) and Anne-Robert-Jacques Turgot (1727–1781).