Complex sentence: It incorporated European influences from the Constructivists and the Bauhaus movement, and its intensity and smallness of scale were typically European, but his influence fell heavily on American artists of the late 1950s and the 1960s.
Split into simpler sentences: It incorporated European influences from the constructivists and the Bauhaus movement, and its intensity and smallness of scale were typically European. But his influence fell heavily on American artists of the late 1950s and the 1960s.