Society
World War I
Bolshevik Revolution
    Lenin
    Stalin
Fascism
    Mussolini
    Hitler

Visual arts
Soviet art
Fascist art
Modernism
Primitivism
Picasso
Braque
Cubism
non-objective
Futurism
    Boccioni
    Brancusi
Mondrian
Dada
    Duchamp
Expressionism
    Fauves
        Matisse
    Die Brucke
        Nolde
    Der Blaue Reiter
        Kandinsky
        Paul Klee
Surrealism
    (Breton)
    de Chirico
Gropius
Bauhaus
Le Corbusier
Dorothea Lange
Alfred Stieglitz
Georgia O’Keeffe
Edward Hopper
Frank Lloyd Wright

Literature
William Butler Yates
free verse
Virginia Woolf
James Joyce
T.S. Elliot
modern hero
Franz Kafka
Ernest Hemingway
Langston Hughes
Willa Cather
William Faulkner

Psychology
Freud

Music, Theater
Stravinsky
Schoenberg
chromatism
dissonance
atonal
tone-row
serialism
Brecht
Eisenstein
Isadora Duncan
Martha Graham
jazz
George Gershwin
Louis Armstrong
improvisation
scat singing
Duke Ellington
be-bop
Charlie Parker