How did Les Demoiselles d’Avignon help lead to Cubism?

Les Demoiselles d’Avignon (1907) is widely recognized as a foundational work that presaged the development of Cubism by challenging traditional artistic conventions.12

The painting helped lead to the movement through several key innovations:

• Radical Geometric Style: Picasso moved away from traditional perspective and modeling, instead rendering the figures as fractured, angular shapes. This approach signaled a shift toward the fragmented forms that would define Cubist art.21
• Multiplicity of Viewpoints: By presenting multiple, simultaneous perspectives of the subjects, the work broke from the long-standing tradition of imitating nature through a single, fixed viewpoint.12
• Influence of Non-Western Art: The use of masklike faces, inspired by Picasso’s study of African art, introduced a new visual language that rejected conventional beauty and realism in favor of a more abstract, structural representation of the human figure.31
• Structural Focus: The painting’s composition, which emphasized the flat surface of the picture plane, laid the groundwork for the later Analytical Cubist focus on the structure of form itself.32

These elements combined to create a "new reality" in painting, moving away from illusionism toward the complex, geometric analysis of form that characterized the Cubist movement.2