Bolesław I the Brave ya kasance babban jigo a tarihin Poland, ya hau matsayin Duke na Poland daga 992 har zuwa hawansa zuwa Sarkin Poland na farko a shekara ta 1025. A takaice ya rike lakabin Duke na Bohemia a matsayin Boleslaus IV tsakanin 1003 zuwa 1004. Zuriyar zuriya ce. na daular Piast, an san Bolesław a matsayin ƙwararren mai mulki kuma babban ɗan wasa a siyasar tsakiyar Turai.Sarautarsa ​​ta kasance da irin ƙoƙarce-ƙoƙarce na yada addinin Kiristanci na Yamma da kuma rawar da ya taka wajen ɗaga ƙasar Poland zuwa matsayin masarauta.Bolesław ɗan Mieszko I ne da matarsa ​​ta farko, Dobrawa na Bohemia.A cikin shekaru na ƙarshe na mulkin mahaifinsa, ya mulki ƙaramar Poland kuma, bayan mutuwar Mieszko a shekara ta 992, da sauri ya ƙaura don ƙarfafa ikon ta hanyar haɗin kan ƙasar, ya kawar da mahaifiyarsa Oda na Haldensleben, kuma ya kawar da 'yan uwansa da ƙungiyoyin su ta 995. An bambanta sarautarsa ​​ta bangaskiyar Kirista mai kishin addini da goyon bayan aikin mishan na mutane kamar Adalbert na Prague da Bruno na Querfurt.Shahadar Adalbert a shekara ta 997 ta inganta manufar Bolesław, wanda ya kai shi ga samun nasarar yin shawarwari kan gawar bishop, wanda ya saya da nauyinsu da zinari, wanda ya tabbatar da ‘yancin kai na Poland daga Daular Roma mai tsarki.An ƙara ƙarfafa wannan a yayin taron Gniezno a ranar 11 ga Maris 1000, inda Emperor Otto III ya ba Poland tsarin coci mai cin gashin kansa tare da babban birni a Gniezno da ƙarin bishop a Kraków, Wrocław, da Kołobrzeg.A wannan taron, Bolesław ya daina biyan haraji ga Masarautar.Bayan mutuwar Otto III a 1002, Bolesław ya shiga cikin rikice-rikice da yawa tare da magajin Otto, Henry II, wanda ya ƙare tare da Amincin Bautzen a cikin 1018. A wannan shekarar, Bolesław ya jagoranci yakin soja na nasara zuwa Kiev , ya shigar da surukinsa Sviatopolk. Ni a matsayina na mai mulki, wani taron da aka yi biki a cikin almara ta hanyar da aka ce ya yanke takobinsa a Ƙofar Zinare ta Kiev, yana ƙarfafa sunan takobin sarauta na Poland, Szczerbiec.Mulkin Bolesław I yana da kamfen na soji da yawa da faɗaɗa yankuna waɗanda suka haɗa da Slovakia ta zamani, Moravia, Red Ruthenia, Meissen, Lusatia, da Bohemia.Ya kuma kafa mahimman tushe na doka da na tattalin arziki, kamar "Dokar Yarima," kuma ya kula da gina muhimman abubuwan more rayuwa kamar majami'u, gidajen ibada, da garu.Ya gabatar da grzywna, rukunin kuɗi na farko na Poland, wanda aka raba zuwa dinari 240, kuma ya ƙaddamar da ƙirƙira tsabar kuɗin kansa.Shirye-shiryensa na dabaru da ci gaba sun ɗaukaka matsayin Poland sosai, tare da daidaita ta da sauran masarautun Yammacin Turai da aka kafa tare da haɓaka matsayinta a Turai.