(1907 - 1930s) With a name also coined by Louis Vauxcelles, cubism was developed almost entirely by Pablo Picasso, whose Les Demoiselles d'Avignon introduced the movement in 1907. Influenced by the simple geometries of African masks, Picasso's Cubism sought to allow an object to be viewed from many sides at once by breaking down the figures into angles and shapes. Cubism as a whole can be subdivided into three movements: analytical cubism (1907-1912), synthetic cubism (1912-c. 1930), and curvilinear cubism (1930s). Analytical cubism was highly experimental, showing jagged edges and sharp multifaceted lines, such as in Picasso's Girl With a Mandolin. Synthetic cubism was inspired by collages and featured flattened forms of normal objects, such as in Picasso's Mandolin and Guitar. Curvilinear cubism contrasted with the flattened and firm edges of synthetic by featuring more flowing, rounded lines, such as in Georges Braque's Houses at l'Estaque. Besides the aforementioned pioneers of cubism, Picasso (whose other Cubist works include Guernica and The Poet) and Braque (Pitcher and Violin, Viaduct at l'Estaque, Still Life with Metronome), other prominent Cubists include Juan Gris (Portrait of Picasso, Guitar and Pipe), Jean Metzinger (Deux Nus, Tea Time), Robert Delaunay (Simultaneous Windows on the City, La Ville de Paris), Albert Gleizes (The Bathers, Portrait de Jacques Nayral), Fernand Leger (Still Life with a Beer Mug), and Henri Le Fauconnier (L'Abondance).