In 1580, Yermak started his conquest of Siberia. With some 540 Cossacks, he started to penetrate territories that were tributary to Kuchum. Yermak pressured and persuaded the various family-based tribes to change their loyalties and to become tributaries of Russia. Some agreed voluntarily because they were offered better terms than with Kuchum, but others were forced. He also established distant forts in the newly conquered lands. The campaign was successful, and the Cossacks managed to defeat the Siberian army in the Battle of Chuvash Cape, but Yermak still needed reinforcements. He sent an envoy to Ivan the Terrible with a message that proclaimed Yermak-conquered Siberia to be part of Russia to the dismay of the Stroganovs, who had planned to keep Siberia for themselves. Ivan agreed to reinforce the Cossacks with his streltsy, but the detachment sent to Siberia died of starvation without any benefit. The Cossacks were defeated by the local peoples, Yermak died and the survivors immediately left Siberia. Only in 1586, two years after the death of Ivan, would the Russians manage to gain a foothold in Siberia by founding the city of Tyumen.
In 1580, Yermak started his conquest of Siberia. With some 540 Cossacks, he started to penetrate territories that were tributary to Kuchum. Yermak pressured and persuaded the various family-based tribes to change their loyalties and to become tributaries of Russia. Some agreed voluntarily because they were offered better terms than with Kuchum, but others were forced. He also established distant forts in the newly conquered lands. The campaign was successful, and the Cossacks managed to defeat the Siberian army in the Battle of Chuvash Cape but Yermak still needed reinforcements He sent an envoy to Ivan the Terrible with a message that proclaimed Yermak-conquered Siberia to be p.art of Russia to the di,smay of the Stroganovs, who had planned to keep Siberia for themselves. Ivan agreed to reinforce the Cossacks with his streltsy, but the detachment sent to Siberia died of starvation without any benefit. The Cossacks were defeated by the local peoples, Yermak died and the survivors immediately left Siberia. Only in 1586, two years after the death of Ivan, would the Russians manage to gain a foothold in Siberia by founding the city of Tyumen.