The appearance of it must be attributed to the process of colonization of uninhabited forest areas of northern Russia along the trade routes. Oka was a waterway on which the moving caravans on the boats to the Volga, and the Volga River in the rich eastern kingdom. Russian princes put on the river bearing the fortress. Moore was then a stronger fortress than Ryazan. Gradually the memory grandchildren Yaroslav the Wise, the role of these cities have changed. Ryazan ascended, Moore became a zaholuste.Batyevo invasion in 1237 has fallen primarily on the Ryazan at Ryazan Prince George, on the great-grandson of Yaroslav Svyatoslavich. None of the Russian princes did not respond in the same year at the call of the Ryazan prince for help against foreign invasion. Yuri took the brunt alone, was defeated, and Ryazan, the town from which went to the Ryazan land, burned and looted.