This country's UNOVIS art group was led by a man whose works included White on White and Black Circle. A depiction of "Barge Haulers on" this country's longest river was painted by a member of its Wanderers movement, Repin. Another man from this country painted abstract works like Composition VII and founded a group including Franz Marc and August Macke, the Blue Rider movement. One man's childhood in this country inspired a work in which a green-faced man is staring at 
This country's UNOVIS art group was led by a man whose works included White on White and Black Circle. A depiction of "Barge Haulers on" this country's longest river was painted by a member of its Wanderers movement, Repin. Another man from this country painted abstract works like Composition VII and founded a group including Franz Marc and August Macke, the Blue Rider movement. One man's childhood in this country inspired a work in which a green-faced man is staring at a goat, I and the Village. For 10 points, name this home of Marc Chagall and Wassily Kandinsky, whose art was stifled under socialist realism.
This country's UNOVIS art group was led by a man whose works included White on White and Black Circle.
Russia [prompt on "Soviet Union" or "USSR" or "Russian Empire" and similar answers] 