As an art form collage first appeared in Cubism founded by Georges Braque and Pablo Picasso to destroy the illusion of apparent three-dimentional space.
In their paintings the artists broke objects down into geometric shapes and spread them out across the picture plane. Thus the objects could be seen from all sides simultaneously.
Later they also started cutting and gluing: they called these first collages papiers collés. Accordingly, the entry of the collage into art was marked and opened a new source of inspiration for countless artists.