Which artist is known for developing the technique of collage?

Pablo Picasso is recognized for his significant role in developing the technique of collage, particularly in the early 20th century as part of the Cubist movement. This innovative approach involves assembling various materials together to create a cohesive artwork, often incorporating elements like paper, fabric, or photographs. Picasso's pioneering work in collage allowed artists to break free from traditional painting methods and explore new dimensions in art by blending different textures and forms, ultimately influencing various art movements that followed.

Georges Braque, though a collaborator with Picasso in the development of Cubism, is more specifically noted for other aspects of this style. Jackson Pollock is famous for his drip painting technique within Abstract Expressionism, while Andy Warhol is celebrated for his contributions to Pop Art, especially in silkscreen printing, rather than the collage technique itself. Thus, Picasso's foundational work and experimentation with collage makes him the artist most closely associated with its development.