Minimalism

The Minimalist happened in 50's of past century and continued till 70;s. As we can see, it happened during the so called "Cold war"
Minimal art is recognized by its simplicity in both form and content, where personal expression is removed in order to achieve this. 
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Minimalism is similar to Conceptual Art in that the outcome is used to express a theory. Minimalism is also similar to Pop Art because of the impersonal attitude, and Land Art because of the use of simple forms. Minimalist artists of the time reacted against Abstract Expressionism, which is demonstrated by the stark canvases, simple installations, and minimalist sculptures. Some of the most famous minimalist artists include

Dan Flavin,

Carl Andre,

Donald Judd

, and Ellsworth.