How has abstract art changed throughout the years?

Abstract art has evolved over the years, from its beginnings in the early 20th century to its current form. Early abstract art was often characterized by its use of geometric shapes and bright colors, while modern abstract art is often more subtle and complex. Abstract art has also become more varied in its use of materials, with many artists now incorporating found objects, digital media, and other unconventional materials into their work. Additionally, abstract art has become more open to interpretation, with many artists now exploring themes of identity, politics, and social issues in their work.