As you get to the end of the 10th century, you have a major event in one of Rurik's descendants, Vladimir, often known as Vladimir the Great. He decides to convert to Eastern Orthodox Christianity. And in a future video, I might talk about his rationales or what historians view as his rationales for conversion. 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.