In neighboring Poland, where we saw waving a current avant-garde, expressionist and "formists" constructivism led to the creation of the group "Blok" (1924-26), inspired by M. Szezuka that evolved from Suprematism Constructivism commitment to communism. The group's magazine Praesens "(which, with its" Unism "resume line malevitchean purified), would, in 1929, the group "RA" ("revolutionary artists"), with H. Stazewski and the sculptor K. Kobro, a new way by profit, while H. Berlewi was engaging in an online "Mecano-making, " the study of optical vibrations. In all this turmoil has resulted, in 1931, creating the first museum of abstract art and avant-garde in Europe, in Lodz, which might last.