Ar Nouveau in Belgium. Part 1.

I want to show you the difference between the Northern Modern of St. Petersburg or Riga and the Art Nouveau of Belgium, primarily Brussels and Antwerp, explain the reasons for the development of this style primarily in the industrialized regions of several European countries and, finally, dwell on the difference between the 3 elephants on which Art Nouveau is based (Paul Ankara, Henri van de Velde and, naturally, Victor Horta).