Мста
The Msta River was an important waterway since at least the 10th century, since it connected Novgorod with the basins of the Volga and Northern Dvina Rivers. In 947 in particular, Olga of Kiev founded a number of "pogosts" on the river. In the course of the administrative reform carried out in 1708 by Peter the Great, the territory was included into Ingermanland Governorate (known since 1710 as Saint Petersburg Governorate). In 1727, separate Novgorod Governorate was split off. In 1770, Borovichi was chartered, and in 1773, Borovichsky Uyezd was established. In 1776, the area was transferred to Novgorod Viceroyalty. In 1796, the viceroyalty was abolished and Borovichsky Uyezd was transferred to Novgorod Governorate.