Since 1450: Various sects pop up in the Russian states, demanding various reforms in the church and a revival of Christian values. Since 1460: The Russian population has recovered from the Black Death (due to a less densely settled population, a smaller part of the people died than in Western Europe). Peasants looking for land start to settle in neighboring areas: Those from Vladimir-Suzdal go to OTL Siberia (ITTL called Novorossiya, New Russia), those from Kiev and the South in general into OTL Ukraine (which is mostly settled by Kumans now; part of them are Muslims, parts are Catholic or Orthodox Christians, and even paganism hasn't completely died out yet).