History of Cologne was considered a substitute for the German University of Strasbourg, which became part of France along with the rest of Alsace. Cologne prospered during the Weimar Republic and progress was made especially in governance, city planning and social affairs. Social housing projects were considered exemplary and were copied by other German cities. As Cologne competed to host the Olympics, a modern sports stadium was erected at Müngersdorf. Beginning of the 1920s civil aviation was permitted once more, and Cologne Butzweilerhof Airport soon became a hub for national and international air traffic, second in Germany only to Berlin Tempelhof Airport. At
History of the Jews in Cologne Bonn to Cologne. He belonged to the families who built the first Cologne community of Modern Times. Oppenheim, Jr. traded with cotton, linen, oil, wine and tobacco but his main activity was banking. Already in 1810 his bank was the second largest in Cologne after "Abraham Schaffhausen". Within the new Cologne Jewish community, Oppenheim, Jr. took an outstanding position in the social and political life. He was in charge of the community school but he was also the deputy of the Cologne community, who sent him to the congress of Jewish Notables in Paris in 1806–1807. A modest hall of