structural:summarization, structural:expansion
Karl Renner was an Austrian politician and jurist of the Social Democratic Workers' Party of Austria. He is often referred to as the "Father of the Republic" because he led the first government of the Republic of German-Austria and the First Austrian Republic in 1919 and 1920, and was once again decisive in establishing the present Second Republic after the fall of Nazi Germany in 1945, becoming its first President after World War II.