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Free imperial city - Wikipedia
Augsburg - Roman History | Roman Republic
Augsburg, Imperial City: Political and Social Development
Free Imperial Cities of the Holy Roman Empire
History of Augsburg, a city in Bavaria | Britannica
Augsburg | Germany, Map, & History | Britannica
Augsburg - Wikipedia
Prince-Bishopric of Augsburg - Wikipedia
Imperial Cities | | The Morgan Library & Museum Online Exhibitions
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