 Denazification and rebuilding of the society proceeded, e.g.in Hamburg were the important trials for war crimes (Hamburg Ravensbrück Trials) held at the Curio house in Rotherbaum quarter, and "Radio Hamburg", a public broadcasting radio station, was established on 4 May 1945, even before the capitulation.The Iron Curtain — only east of Hamburg — separated the city from most of its hinterland and further reduced Hamburg's global trade.