Birth of WILPF: Austria (1915), Denmark (1915), France (1915), Germany (1915), Hungary (1915), Ireland (1915), Italy (1915), Norway (1915), Sweden (1915), Switzerland (1915), United Kingdom (1915), Bulgaria (1918), Belgium (1918), Poland (1918), Finland (1919), Czecho-Slovakia (1920), Greece (1920), Ukraine (1920), Yugoslavia (1920)