The document provides an overview of De Stijl, a Dutch artistic movement founded in 1917 that advocated pure abstraction and simplicity using only primary colors, black, white, and straight horizontal and vertical lines. Key figures included Piet Mondrian, Theo van Doesburg, and Gerrit Rietveld. The movement sought to remake society after WWI through a utopian vision of universal order in art. It emphasized form, construction and function, influencing later International Style architecture of the 1920s-30s. Mondrian's later works like Broadway Boogie-Woogie showed the influence of New York on his more energetic rhythmic style.