My personal proposal
Understanding Art: From the invention of photography until today
1830s: invention of photography (Premodern Art) 1872: Monet (Impression: Sunrise) The historical avant-gardes in Paris: Impressionism, Fauvism, Expressionism, Cubism, Futurism, Dadaism & Surrealism. 
(MODERN ART) 1914-1918: WW I Art between wars: A profound reflection on the consequences of the Great War and a search for new forms of artistic expression amidst social and political unrest. 1939-1945: WW II NYC became the art capital of the world with the development of Abstract Expressionism and later Pop Art (Early postmodernism Art). This was followed by the shift that gave rise to Conceptual Art (Late postmodernism Art). 1962: Concept Art (Early and Late Postmodernism Art) 1991: CONTEMPORARY ART Internet massification, digital revolution, global connection, new e-media and supports, A.I… Today