hArlEm wAs CAllED thE CApitAl oF BlACk AmEriCA in thE 1920s AnD '30s mAinly BECAusE oF its
A．Art AnD CulturE.
B．immigrAnt populAtion.
C．politiCAl EnthusiAsm.
D．DistinCtivE ArChitECturE.