Brandenburg the Province of Brandenburg, again subdivided into the government regions of Frankfurt and Potsdam. In 1881, the City of Berlin was separated from the Province of Brandenburg. However, industrial towns ringing Berlin lay within Brandenburg, and the growth of the region's industrial economy brought an increase in the population of the province. The Province of Brandenburg had an area of and a population of 2.6 million (1925). After World War II, the Neumark, the part of Brandenburg east of the Oder–Neisse line, was transferred to Poland; and its native German population expelled. The remainder of the province became a state
Anna Maria von Eggenberg, née Brandenburg-Bayreuth in her courtyard across the street from the former Protestant Church of St. George, which had previously been turned over to the Jesuits. That city palace in Sopron still bears her name as the Eggenberg House () and is still adorned with the coat of arms of the princes of Brandenburg-Bayreuth above the main gate and the Hohenzollern coat of arms beneath what was the pulpit above the courtyard. She died in this house on 8 May 1680 and is interred with her parents in the City Church () of Bayreuth. From her marriage she had the following children: Anna