The term of collage was created by Pablo Picasso and the Cubist painters in the early 1900's. Wood based collages started around the 1930s and decoupage, which is a decorative craft, was started in the 1700s. Photo montage began in 1956 and digital montage was around since 1992.
There are many different people who make collages like Joseph Cornell, Leonis Ogour, and Erica Harris. Early collage artists are people like Georges Braque, Kurt Scwitters, and Henri Matisse. Collages are a good form of art.