The Domesday Book, completed in 1086, had significant effects on the people of England in various ways, but among the options provided, the most relevant impact would be:
A fair tax system was placed on the entire kingdom.
The Domesday Book was essentially a comprehensive survey of landholdings in England, commissioned by William the Conqueror. It recorded details about the lands, their owners, and the resources available, which allowed the Norman rulers to assess taxes more effectively. This created a more systematic approach to taxation that was based on actual landholdings and economic resources, contributing to the establishment of a more organized governance structure.
While the other options also touch on relevant historical contexts, the direct effect of the Domesday Book primarily relates to the administration of taxes and the oversight of land in England.