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What is Oldenburg, Germany famous for?
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Why is Oldenburg famous?
Oldenburg was a sovereign, independent state. Annexed by France in 1810, the Duchy of Oldenburg was restored and elevated to the status of Grand Duchy.
Oldenburg, former German state, successively a countship, a duchy, a grand duchy, and a Land (state) before it became a Regierungsbezirk (administrative ...