Cologne City Hall and 1096 were followed by the formation of a "commune" and first municipal structures as a basis for urban autonomy. In order to consolidate their economic and political rights, Cologne burghers established fraternities and trade guilds (most notably the "Richerzeche"). In the 1106 war of succession between Emperor Henry V and his father Emperor Henry IV, they took deliberate opposition to the archbishop, after which they gained benefit in regards to the city's territorial expansion over the following years. As – at the time – one of Europe's busiests trading ports and largest city in Germany, the population of Cologne
NS Documentation Centre of the City of Cologne 2008, part of Cologne's city museums associations. So within the municipal administration, it is responsible for dealing with all subjects related to the city's Nazi past, including the visitor programs for former forced labourers, which the city has been running since 1989. The center has been the recipient of numerous awards, including the "special recommendation" of the 2000 Museum of the Year Award. The NS Documentation Center of the City of Cologne has been awarded several times: In 2004 Elzbieta Adamski, Employee of the NS Documentation Center of the City of Cologne, received by the hands of the president of