The Domesday Book is a comprehensive survey of England completed in 1086, commissioned by William the Conqueror. It aimed to assess the landholdings and resources of the kingdom for taxation purposes. The book recorded details about landowners, the size of their estates, and the value of their lands, providing a snapshot of medieval England. This historical document is significant as it offers insights into the social and economic conditions of the time. It serves as a vital resource for historians studying the feudal system and the impact of the Norman Conquest on English society.