During the Harlem Renaissance of the 1920s, African American authors and artist used literature and art to

Harlem Renaissance, a blossoming (c. 1918–37) of African American culture, particularly in the creative arts, and the most influential movement in African American literary history. Embracing literary, musical, theatrical, and visual arts, participants sought to reconceptualize “the Negro” apart from the white stereotypes that had influenced black peoples’ relationship to their heritage and to each other. They also sought to break free of Victorian moral values and bourgeois shame about aspects of their lives that might, as seen by whites, reinforce racist beliefs. Never dominated by a particular school of thought but rather characterized by intense debate, the movement laid the groundwork for all later African American literature and had an enormous impact on subsequent black literature and consciousness worldwide. While the renaissance was not confined to the Harlem district of New York City, Harlem attracted a remarkable concentration of intellect and talent and served as the symbolic capital of this cultural awakening.

Explanation:

The two structural models are radio and television broadcasting.

Explanation:

The two models fall under public broadcasting and where established during the 1920s and operated by the British broadcasting corporation which where a trusted organisation during the second world war. This models of broadcasting where later emulated by the whole of Europe.

Public broadcasting first started in Britain and other parts of the world used similar models as the one used in Britain. Modern broadcasting(radio and television models) has now gone commercial and is now a dominant form of transmitting information all over the world.