berlin dada artists created a variation on collage called
Dada In February 1918, while the Great War was approaching its climax, Huelsenbeck gave his first Dada speech in Berlin, and he produced a Dada manifesto later in the year. Following the October Revolution in Russia, by then out of the war, Hannah Höch and George Grosz used Dada to express communist sympathies. Grosz, together with John Heartfield, Höch and Hausmann developed the technique of photomontage during this period.
Pablo Picasso Pablo Picasso (/pɪˈkɑːsoʊ, -ˈkæsoʊ/;[2] Spanish: [ˈpaβlo piˈkaso]; 25 October 1881 – 8 April 1973) was a Spanish painter, sculptor, printmaker, ceramicist, stage designer, poet and playwright who spent most of his adult life in France. Regarded as one of the most influential artists of the 20th century, he is known for co-founding the Cubist movement, the invention of constructed sculpture,[3][4] the co-invention of collage, and for the wide variety of styles that he helped develop and explore. Among his most famous works are the proto-Cubist Les Demoiselles d'Avignon (1907), and Guernica (1937), a dramatic portrayal of the bombing of Guernica by the German and Italian airforces.