 Marcel Duchamp coined the term "ready-made" in 1915 to describe a common object that had been selected and not materially altered in any way.Duchamp assembled "Bicycle Wheel" in 1913 by attaching a common front wheel and fork to the seat of a common stool.This was not long after his "Nude Descending a Staircase" was attracting the attention of critics at the International Exhibition of Modern Art.