The area was populated by
Finnic peoples. In the 14th-15th centuries, during the colonization, it was a disputed territory between the
Grand Duchy of Moscow and the
Novgorod Republic. Novgorod controlled a major part of the Russian North, and, in particular, all areas along the
Sukhona River northeast of what is now Nikolsky District. Moscow controlled
Veliky Ustyug, which it inherited from the
Vladimir–Suzdal Principality, while the
Yug River was the waterway it used to get to Veliky Ustyug. It is known that in 1425 Nikolsk and surrounding territories paid tribute to Novgorod. In the end of the 15th century, the Grand Duchy of Moscow took over the Novgorod's territories and Nikolsk became one of the key points on the way from Moscow to the White Sea, which until 1703 was the main route for the foreign trade in Russia. The harbor of Nikolsk in particular was used to transport cargo. In the course of the
administrative reform carried out in 1708 by
Peter the Great, the territory was included into
Archangelgorod Governorate. In 1780, the governorate was abolished and transformed into
Vologda Viceroyalty. At the same time, Nikolsk became the seat of an
uyezd and was granted town rights. On April 18, 1924, the uyezds were abolished in favor of the new divisions, the districts, at which time Nikolsky District was established. ==Geography==