In 1648 it was secularized and became part of Brandenburg - Prussia as the Principality of Halberstadt .
The region around Halberstadt was a clerical principality , which emerged with the creation of the Bishopric of Halberstadt in 804 and existed until the Thirty Years ' War .
In 1648 it was secularized and became part of Brandenburg - Prussia as the Halberstadt     .
The region around Halberstadt was a clerical principality , which emerged with the creation of the Bishopric of Halberstadt in 804 and existed until the Thirty Years ' War .