Administratively, by the end of the Middle Ages it was divided into pyatins, which, in turn, from the second half of the 16th century were divided into half (pyatins). The five–fold division was superimposed on the earlier one – on volosts, uyezds (prisuds), pogosts and stans, and, according to the annals, the foundations of this administrative division were laid in the 10th century by Princess Olga, who established places of pogosts and uroks in Novgorod Land. The Tale of Bygone Years defines it as "a great and abundant land".