Along with almost all of Lower Silesia , however , the city became part of Poland under the terms of the Potsdam Conference . The Polish name of " Wrocław " was declared official . There had been discussion among the Western Allies to place the southern Polish-German boundary on the Glatzer Neisse , which meant post-war Germany would have been allowed to retain approximately half of Silesia , including Breslau . However , the Soviets insisted the border be drawn at the Lusatian Neisse farther west
Potsdam Conference
Potsdam Conference
Wrocław