Kievan Rus (jan 10, 980 – nov 17, 988)
Description:
http://school.eb.com/levels/middle/assembly/view/195421"Russia." Britannica School, Encyclopædia Britannica, 1 Nov. 2017. school.eb.com/levels/middle/article/Russia/276819#207572.toc. Accessed 23 Jan. 2018.
Added to timeline:
Date:
jan 10, 980
nov 17, 988
~ 8 years and 10 months