The 1920s art movement known as DADA was an avant-garde movement that began in Zurich, Switzerland in 1916. It was a reaction to the horrors of World War I and sought to challenge traditional values and conventions. Dadaists used techniques such as collage, photomontage, and readymades to create works of art that were often absurd and nonsensical. The movement had a major influence on the development of modern art and culture.