And as we will see, over time, and because of not only his conversion, but essentially the conversion of the entire Kievan state, over time, especially with the eventual decline of the Byzantine Empire, what would eventually be Russia becomes a center of Eastern Orthodox Christianity. Now, the Kievan state lasts as an independent state until we get to the 13th century. And for many other videos, you might be guessing what happens in the 13th century. You have Genghis Khan and then his descendants emerge out of Eastern and Central Asia. And in 1240, you have the Mongol invasion, at which point, many of the principalities within the land of Rus become tributaries to the Mongolians. And they would be so for the next roughly 200 years until Ivan the Great comes along and is able to exert independence from the Mongols for the Rus. But we will cover that in a future video.