Komarno, Novi Sad, Giurgia, Constanta, Linz, Ulm, and Regensburg are all cities along this river, wh
Komarno, Novi Sad, Giurgia, Constanta, Linz, Ulm, and Regensburg are all cities along this river, which has its source in Wurttemberg before reaching the Black Sea at Constanta. FTP, name this river which also flows through Belgrade, Bratislava, Buda  pest, and Vienna, and which was featured in a work by Johann Strauss that called it blue.
Komarno, Novi Sad, Giurgia, Constanta, Linz, Ulm, and Regensburg are all cities along this river, which has its source in Wurttemberg before reaching the Black Sea at Constanta.
Danube