Georges Braque was a French painter and sculptor who was an important figure in the development of CUBISM. He was a close friend and collaborator of Pablo Picasso, another famous CUBIST painter. Together, they developed the CUBIST movement, which was a style of art that focused on breaking down objects into geometric shapes. Braque also worked with other cubists such as Joan Miro and Fernand Leger. He was a member of the Fauves, a group of artists who used bright colors and bold brushstrokes to create expressive works. Braque also wrote a book called 'Le Livre NOIR' which explored the ideas behind CUBISM.