Mieszko I of Poland place after Mieszko's death, specifically in 999. There is also a theory according to which during this transition period Lesser Poland was governed by Bolesław Chrobry, whose authority was granted to him by the Bohemian duke. At the end of his life (ca. 991-92), Mieszko I, together with his wife Oda and their sons, issued a document called "Dagome iudex", where the Polish ruler placed his lands under the protection of the Pope and described their borders. Only a later imprecise summary of the document has been preserved. There are two main theories concerning reasons behind the issuing of "Dagome
Mieszko I of Poland probably closer to the latter date. Due to the lack of sources it is not possible to determine exactly which lands he inherited. Certainly among them were the areas inhabited by the Polans and Goplans, as well as the Sieradz-Łęczyca lands and Kuyavia. It is possible that this state included also Masovia and Gdańsk Pomerania. Soon the new ruler had faced the task of integrating the relatively large, ethnically and culturally heterogeneous territory. Although the residents of areas controlled by Mieszko spoke mostly one language, had similar beliefs and reached a similar level of economic and general development, they were