The campaigns of Bohdan Khmelnytskyi in 1648, and especially his victories at Yellow Waters and Korsun, created the conditions for the formation of an independent Ukrainian state - the Hetmanship. The victory at Zborovo forced the Poles to confirm the ancient rights of the Ukrainian Cossacks and thus laid the foundations of Ukrainian statehood. However, the defeat at Berestechko and the subsequent heavy battles with the Polish crown army proved the impossibility of preserving the Ukrainian state by the forces of Ukrainians alone, which led to the decision, which was made on January 8, 1654 at the Pereyaslav Council, to sign a treaty between Ukraine and Russia.