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 offices, and the Roman administration went into crisis and the emperor had to look for alternatives. It became necessary for the Cologne Council to use a decree of Emperor Constantine the Great of 321, which permitted Jews to be appointed to the "curia". This is the first evidence of the existence of a Jewish community in the town of Cologne. The emperor's decree was passed down in the "Codex Theodosianus" (439), which indicates the existence of a firmly established Jewish community in Cologne in 321 and 331. A partial translation of the "Codex" reads: "We allow all town councils to