The wars of the Rostov-Suzdal and Vladimir princes in the 12th century are the most important and dramatic page in the history of Ancient Rus'. It was these wars that had a decisive influence on the future fate of the entire Russian state. After them, Kyiv ceased to be the main political center of the Russian lands. The once united country was divided into several parts: North-Eastern Rus', South-Western Rus' and Southern Rus'. The wars and campaigns of Yuri Dolgoruky, Andrei Bogolyubsky and Vsevolod the Big Nest led to the fact that it was the Vladimir-Suzdal principality that became the most powerful on the territory of the once united Rus'. From this time on, a global rift begins to pass between Southern Russia and Northeastern Russia. A rift, the consequences of which are still felt today. The next book in the series tells about this alarming and tragic time.