The district duchy, also known as the district principality, was a type of the state under the patrimonial system, such as duchy or principality, formed in the feudal system, as a result of land partition between the members of a royal family.[1] It occurred in the Middle Ages and early modern period, notably in Europe, in states such as the Holy Roman Empire,[2] Duchy of Poland,[1][3] and Kievan Rus'.[4]
- ^ a b "Rozbicie dzielnicowe". encyklopedia.pwn.pl (in Polish).
- ^ Kyra T. Inachin, Die Geschichte Pommerns, Hinstorff Rostock, 2008, p. 30, ISBN 978-3-356-01044-2.
- ^ Jerzy Wyrozumski: Historia Polski do roku 1505, pp. 104–111
- ^ Tadeusz Manteuffel: Historia powszechna. Średniowiecze. Warsaw: Wydawnictwo Naukowe PWN, 1990, p. 250. ISBN 83-01-08685-8.
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