 The new wave of settlement of the Wild Field lands, and in particular the lands of the Slobozhanshchina, dates back to the 1630-50s, when thousands of Ukrainians were forced to flee from massacre after unsuccessful revolts against the Polish authorities.1640 is the official date of foundation of the city.But in the same year, the Tatars seized the city, which was captured by Cossacks Kondratii Sulima.