モンゴルのルーシ侵攻
The history of Ukrainian literature dates back to the 11th century, following the Christianisation of Kievan Rus'. The writings of the time were mainly liturgical and were written in Old Church Slavonic. Historical accounts of the time were referred to as "chronicles", the most significant of which was the Primary Chronicle. Literary activity faced a sudden decline during the Mongol invasion of Rus'.