Marcel Duchamp was a French artist whose work is most often associated with the Dada

Dada

Dada or Dadaism is a cultural movement that began in Zurich, Switzerland, during World War I and peaked from 1916 to 1922. The movement primarily involved visual arts, literature—poetry, art manifestoes, art theory—theatre, and graphic design, and concentrated its anti-war politics through a...

ist and Surrealist

Surrealism

Surrealism is a cultural movement that began in the early 1920s, and is best known for the visual artworks and writings of the group members....

 movements. Considered by some to be one of the most important artists of the 20th century, Duchamp's output influenced the development of post-World War I Western art. He advised modern art collectors, such as Peggy Guggenheim

Peggy Guggenheim

Marguerite "Peggy" Guggenheim was an American art collector. Born to a wealthy New York City family, she was the daughter of Benjamin Guggenheim, who went down with the Titanic in 1912 and the niece of Solomon R. Guggenheim, who would establish the Solomon R...

 and other prominent figures, thereby helping to shape the tastes of Western art

Western art history

Western art is the art of the North American and European countries, and art created in the forms accepted by those countries.Written histories of Western art often begin with the art of the Ancient Middle East, Ancient Egypt and the Ancient Aegean civilisations, dating from the 3rd millennium BC...

 during this period.

Duchamp challenged conventional thought about artistic processes and art marketing, not so much by writing, but through subversive actions such as dubbing a urinal art and naming it Fountain

Fountain (Duchamp)

Fountain is a 1917 work by Marcel Duchamp. It is one of the pieces which he called readymades. In such pieces he made use of an already existing object. In this case Duchamp used a urinal, which he titled Fountain and signed "R. Mutt". Readymades also go by the term Found object...

.