When Tsarist Russia was founded in the early days, it did not border our country, but was a European country, and it was not until the eastward expansion in the 16th century that it became our land neighbor. The Tsar's base was west of the Ural Mountains, and the European part was its central area, so how did the Tsar border our country to become a land neighbor?
Another country must be mentioned here, the Siberian Khanate, the last dynasty in North Asia, which was still a formal state before the arrival of the Europeans. During the early Western Expedition of Genghis Khan, the Ancestor of the Yuan Dynasty, he once gave the Chincha steppe north of the Aral Sea to his eldest son Shuchi, and when Shuchi's son Batu reigned, the Mongols formed a new khanate in Central Asia, which is what we call the Chincha Khanate of the Golden Horde. The Khanate of Chincha had long ruled the Volga Valley, and this generation was the settlement of the Slavs.
In order to survive, the Slavs had to cling to the rule of the Mongols. The Golden Horde established by Batu had a very low status in the Mongol system, because the Golden Horde was close to the steppes of Eastern Europe, and in order to facilitate its rule, Batu divided parts of the area between the Aral Sea and the Irtysh River to his brother Huerda, and the area ruled by Huerda was also known as the White Horde.
Beginning in 1374, the Golden Horde and the White Horde were at war, supported by Timur Khan, who had risen in Central Asia, and the White Horde finally defeated the Golden Horde, who defeated the Golden Horde Khan Mamai Khan in 1382 and annexed its territory, thus completing the merger with the White Horde.
In order to destroy the White Horde, Timur Khan re-supported the new puppet Kugrut to continue to confront the White Horde, and he took advantage of the war between Kugrut and Taklu to seize the opportunity to occupy the land in the Syr Darya Valley during the war between Kugrut and Taklu, and was seriously injured by the loss of vitality, so he had to avoid its attack. Defeating the Lost, Kugrut sat on the Khan of the White Horde, after which he fought fiercely with Timur Khan. When Kugru's son Barak succeeded to the throne, the White Horde finally lost its dominance in Eastern Europe.
In 1428, Barak Khan died in civil unrest and the White Horde completely collapsed, a year in which the White Horde split into six khanates, and the Mongol dominance in Central Asia and Eastern Europe ceased to exist.
After the division of the White Horde, the descendants of his brother, Theban, established a new khanate in the area of today's tributary of the Ob River, which we call the Siberaya Khanate of the Khanate of the Lost Bir. The ancestor of the Siberian Khanate was Theban, who was a shuzi of Shuchi, so the Siberian Khanate also belonged to the Mongol Khanate.
The Siberian Khanate was sparsely populated, with vast grasslands and forests, and because of this, it was coveted by the Slavs. After the weakening of the White Horde, the Slavs rose in Eastern Europe, and by the mid-15th century, the Grand Duchy of Moscow had finally risen in the Volga Valley, and it had begun its eastward expansion as an enemy of the Siberian Khanate.
Before the Grand Duchy of Moscow expanded eastward, civil strife broke out in the Siberian Khanate, which severely weakened the power of the Siberian Khanate and made it no longer able to stop the expansion of the Muscovite Principality. The early capital of the Siberian Khanate was in Gengitula, and in the late 15th century, Ibak Khan, another descendant of the Former Panxi, came to Siberia from Central Asia, led an army to defeat the Siberian Khan Ahma Khan, and occupied the city of Tyumen. Not to be outdone by the Ibak Khanate, the Mamuk of the Siberian Khanate re-defeated the Ibak Khan in 1493 and moved the capital from Tyumen to Kashrik. During the reign of Mamuk Khan, the Siberian Khanate was constantly at war with the surrounding Muscovite principalities and Kazan, and its power finally declined.
The Siberian Khanate was weakened by civil strife, and the Muscovite Principality in the west took advantage of the rise, and in the mid-16th century, the Tsar of the Moscow Empire sent the Cossack chief Yermak Timofeevich to lead the Cossack cavalry into Siberia, and the great khanate that had once bordered our country was finally on the verge of extinction. After the fall of the Siberian Khanate, Tsarist Russia officially bordered our country.