 Nyora kupfuurira kweiyi ndima - Guta racho rakavakwa navaSlav. Seguta, Brest Berestye muKievan Rus yakatanga kutaurwa mu Primary Chronicle muna 1019 apo Kievan Rus vakatora nhare kubva kumaPoland. Iri nderimwe remaguta ekare muBelarus. Yakanga ichipikiswa zvikuru pakati pevatongi vePoland madzimambo, maduke makuru nemaDuke eMasovia uye machinda eKievan Rus, akaparadzwa nemaMongol muna 1241 ona: Kutanga kweMongol kupinda muPoland, uye haina kuvakwazve kutozosvikira muna 1275. Gare gare rakanga riri rutivi rwenyika yeGrand Duchy yeLithuania. 