Yaroslav the Wise

Yaroslav the Wise was Grand Prince of Kyiv Rus in the 11th century.
He was the second son of Volodymyr the Great and Rogneda who hated Volodymyr for killing her tribe and family. As a child Yaroslav was lame, but continual training made him healthy and strong. Though he was an excellent warrior, he detested wars. He prefered reading and reflecting on different things.
Being Prince of Novgorod he refused to pay contribution to Volodymyr the Great, so he declared the war to on his father. But Volodymyr had died before the war began. Yaroslav fought against his brothers for Kyiv throne and won.
During his reign Kyiv Rus became the strong and powerful european state. He expanded the boundaries of Kyiv. Saint Sophia Cathedral, which was the largest chuch in the world, was built in 1037. Yaroslav collected many books for library in the Cathedral, but scientists have not found it yet. Many new towns were founded. He promoted expansion of Christianity in Rus. Taking care of education, he openned schools and libraries in churches.
In order to build a strong state and regulate lagal and social relations between citizens, Yaroslav wrote a code called Pravda YaroslaIt's (она таки и называется Russkaya Pravda)
He estableshed dynastic relations with royal families in Sweden, Norway and France.