One artist from this home of Anna Boch depicted Augusta Boogaerts in his La Siréne and a collapsed skeleton in My Portrait in 1960, and also painted a work in which a skeleton in a green hat and a white-sashed mayor celebrate the titular event with the message (*) "Vive La Sociale!"
Though it's not France, one painter from this nation painted coastal cliffs in her The Cliff at Sanary and The Breton Coast. Another painter from here depicted a poet in a red suit declaiming to a group clustered around a round table in The Reading and used pointillism for his Sailboats and Estuary. One artist from this home of Anna Boch depicted Augusta Boogaerts in his La Siréne and a collapsed skeleton in My Portrait in 1960, and also painted a work in which a skeleton in a green hat and a white-sashed mayor celebrate the titular event with the message (*) "Vive La Sociale!" Because of that painting, which shows its titular figure ona donkey, that painter was expelled from this nation's main artistic group, The Twenty. Another painter from this country depicted a cannon in On the Threshold of Liberty and a gigantic apple in The Listening Room. For 10 points, name this nation, the home of Theo van Rysselberghe and James Ensor, who painted Christ's Entry into Brussels. 
Though it's not France, one painter from this nation painted coastal cliffs in her The Cliff at Sanary and The Breton Coast.
Kingdom of Belgium [or Koninkrijk Belgie; or Royaume de Belgique; or Konigreich Belgien]