Dada was an artistic and literary movement that began in Zürich, Switzerland. It arose as a reaction to World War I and the nationalism that many thought had led to the war. Influenced by other avant-garde movements - Cubism, Futurism, Constructivism, and Expressionism - its output was wildly diverse, ranging from performance art to poetry, photography, sculpture, painting, and collage. Dada's aesthetic, marked by its mockery of materialistic and nationalistic attitudes, proved a powerful influence on artists in many cities, including Berlin, Hanover, Paris, New York, and Cologne, all of which generated their own groups.