Miecław's State (1 ene 1037 año – 1 ene 1047 año)

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The Miecław's State was a state located in Masovia with capital in Płock. It was formed around 1037 by Miecław by breaking away from Duchy of Poland during the crisis inside the country.[1] It existed until 1047, when Casimir I the Restorer, duke of Poland, reconquered the state into Duchy of Poland.

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