Piet Mondrian's artistic style revolutionized modern art through his development of abstract art characterized by geometric forms and a limited color palette. His move towards abstraction was a response to the chaos of the 20th century and a desire to express universal harmony. By employing bold lines and primary colors, Mondrian's works, such as "Composition with Red, Blue, and Yellow," illustrated the principles of neoplasticism. His emphasis on simplicity and order not only influenced contemporary artists but also paved the way for modern movements like minimalism and contemporary design.