Imperial Free City: In the Holy Roman Empire, an imperial free city (German: freie Reichsstadt) was a city formally responsible to the emperor only – as opposed to the majority of cities in the Empire, which belonged to a territory and were thus governed by one of the many princes (Fürsten) of the Empire, such as dukes or prince-bishops.
The only princely member states of the Holy Roman Empire that have preserved their status as monarchies until today are the Grand Duchy of Luxembourg and the Principality of Liechtenstein. The only Free Imperial Cities still existing as states within Germany are Hamburg and Bremen .
1236: HRE Prince of the Empire; Imperial immediacy 1648: Secularized as Principality for Mecklenburg-Schwerin: Ratzeburg: Principality Low Sax PR 1648: Ratzeburg secularised and given to Mecklenburg-Schwerin: 1701: To Mecklenburg-Strelitz: Ravensberg: 1180: County Low Rhen n/a 1170: Renamed from Calvelage; fief of Saxony: 1180: Imperial immediacy
List of states in the Holy Roman Empire. This is a list of states in the Holy Roman Empire beginning with the letter S: Mark an der Sann (AKA Sannmark, Mark an der Sawe, Sann-Gft., Sann-Mgft., Mgft. Soun (e), Gft Soun (e), Sanntal, Saunien) 1460: Territory passes to the Habsburgs. Later integrated into Styria.