 Complete the following phrase:  The capital city of Chernihiv has known human settlement for over 2,000 years, according to archaeological excavations. The Chernihiv Oblast comprises a very important historical region, notable as early as the Kievan Rus period, when the cities of Chernihiv and Novhorod-Siverskyi were frequently mentioned. The city of Chernihiv was the second most important Ukrainian city during the Rus period of Ukrainian history, often serving as a major regional capital. Danylo of Chernihiv wrote of his pilgrimage to Jerusalem during this era. The numerous architectural monuments of the city bear witness to the invasions suffered, including those by the a hrefMongol20invasion20of20RusTatarsMongolsa, Lithuanians, Poles, and Nazis. On the territory of the region took place numerous tragic events such as 