translate English to German: However, he decided to abandon the province of Dacia , on the exposed north bank of the Danube, as too difficult and expensive to defend. He reorganised a new province of Dacia south of the Danube, inside the former Moesia , called Dacia Ripensis, with Serdica as the capital.
271 begannen die Arbeiten an der Aurelianischen Mauer , die sich noch bis in die Regierungszeit des Probus hinein erstreckten.