Cubism: The geometric shapes and simplified forms used by Cubist artists influenced the De Stijl artists' use of abstraction.
Neo-Plasticism: The work of Dutch artist Piet Mondrian, who developed the concept of Neo-Plasticism, was a major influence on the De Stijl movement.
Theosophy: The De Stijl artists were interested in the spiritual and mystical aspects of art, and were inspired by theosophy, a spiritual movement that emphasizes the unity of all things.
The machine age: The De Stijl artists were also influenced by the industrial revolution and the rise of the machine age, which led them to emphasize simplicity, functionality, and order in their art.
Other sources: The De Stijl artists were also influenced by other sources, including folk art, African art, and Japanese art.