Minimalism was an art movement that emphasized simplicity and industrial materials. It opposed the emotional expression of abstract expressionism and focused on basic geometric forms and repetition. Key artists included Frank Stella, Sol LeWitt, Dan Flavin, Donald Judd, and Carl Andre. Their work used materials like steel, concrete, and light to create simple sculptures and installations. Minimalist music also featured repetition and long durations. The movement sparked criticism for being too simple but influenced later art and design.