My favourite Avant-Garde i most say it's Dadaism. Well, i love this movement and the reason why I think is't so important it's that there art work change the entired history of Art. This it's not my idea, they are a lot of people thats agree with me between them, important philosofers, historian and critics of arts. The most representative artist of this avant garde its definilly Marcel Duchamp. He probably did the greates, creative and clever art work , putting simples objetcs in a museum. This estrategy has to do whit the biggest cuestion in arts about what its art really, and pushing people think make serious reflections about art categories like "artist" "object" and "sing". This concept were questioned for work like "the fountain" or "Chair". This alsome artistic operations can't be oversome until our days. A similar impact was, decades after dadaism, the art works from Cezanne o Manet, they beggin the entired problem of "representation" in the painting, and Duchamp continius exploring this lenguage issue in art and become a leyend. . The biggest contribution was the all subject of the Art Institution. With “the fountain”, an urinal that he just buy singing it with the word “mutt”, was the fist time that some artist put an object doing notting in it, this operation represents the antic value of having the category and name of artist: finally art its what you say it is and what institution accept between there walls.