Solution:After the 1917th revolution, the Soviet Union was restructured with new political system based on the Marxist-Leninist principles.The newly formed communist party by Lenin shows much interest in the media which serves to the working class in the country and their welfares.
So the Soviet originates a theory from Marxist, Leninist and Stalinist thoughts, with mixture of Georg Wilhelm Friedrich Hegel ideology is called "Soviet Media Theory" is also known as "The Communist Media Theory".
The Frankfurt School is a school of social theory and critical philosophy associated with the Institute for Social Research, at Goethe University Frankfurt in 1929.
Founded in the Weimar Republic (1918-1933), during the European interwar period (1918-1939), the Frankfurt School initially comprised intellectuals,
academics, and political dissidents dissatisfied with the contemporary socio-economic systems (capitalist, fascist, communist) of the 1930s.
The Toronto School is a school of thought in communication theory and literary criticism, the principles of which were developed chiefly by scholars at the University of Toronto.
It is characterized by exploration of Ancient Greek literature and the theoretical view that communication systems create psychological and social states. The school originated from the works of Eric A.
Havelock and Harold Innis in the 1930s, and grew to prominence with the contributions of Edmund Snow Carpenter, Northrop Frye and Marshall McLuhan.
Normative theories were first proposed by Fred Siebert, Theodore Peterson and Wilbur Schramm in their book called "Four Theories of the Press".
At first the word "Normative Theory" was pronounced in USA during the height of 'cold war' with communism and soviet. Often it called as western theories of mass media.
Dependency theory evolved around 1950 as a reaction to some earlier theories of development. Dependency theory was popular in the 1960s and 1970s as a criticism of modernization theory.
The main propounders of dependency theory are: Prebisch, Singer, Paul Baran, Paul Sweezy, C. Furtado, F H Cardoso, Gunnar Myrdal, А Gunder Frank, Girvan, and Bill Warren.