Conference they were handed over to Soviet and Polish civilian administrations and ceased to constitute part of Allied-occupied Germany. In the closing weeks of fighting in Europe, United States forces had pushed beyond the agreed boundaries for the future zones of occupation, in some places by as much as . The so-called line of contact between Soviet and U.S. forces at the end of hostilities, mostly lying eastward of the July 1945-established inner German border, was temporary. After two months in which they had held areas that had been assigned to the Soviet zone, U.S. forces withdrew in the first days of July 1945. Some have concluded that this was a crucial move that persuaded the Soviet Union to allow American, British and French forces into their designated sectors in Berlin, which occurred at roughly the same time, although the need for intelligence gathering (Operation Paperclip) may also have been a factor. On 20 March 1948, the Soviets withdrew from the Allied Control Council; later leading to the establishment of the two German states in East and West both in 1949. Occupation zones American Zone The American zone in Southern Germany consisted of Bavaria (without the Rhine Palatinate Region and the Lindau District, both part of the French zone) and Hesse (without Rhenish Hesse and Montabaur Region, both part of the French zone) with a new capital in Wiesbaden, and of northern parts of Württemberg and Baden. Those formed Württemberg-Baden and became northern portions of the present-day German state of Baden-Württemberg founded in 1952. The ports of Bremen (on the lower Weser River) and Bremerhaven (at the Weser estuary of the North Sea) were also placed under U.S. control because of the U.S. request to have certain toeholds in Northern Germany. At the end of October 1946, the American Zone had a population of: Bavaria 8.7 million Hesse 3.97 million Württemberg-Baden 3.6 million Bremen 0.48 million The headquarters of the American military government was the former IG Farben Building in Frankfurt am Main. Following the complete closure of all Nazi German media, the launch and operation of completely new newspaper titles began by licensing carefully selected Germans as publishers. Licenses were granted to Germans not involved in Nazi propaganda to establish those newspapers, including Frankfurter Rundschau (August 1945), Der Tagesspiegel (Berlin; September 1945), and Süddeutsche Zeitung (Munich; October 1945). Radio stations were run by the military government. Later, Radio Frankfurt,