List famous contemporaries of the Crusader siege of Constantinople.

Kings John Lackland (England) and Philip I Augustus (France); Pope Innocent III, Cardinal Stephen Langton (England), Count Simon de Montfort the Elder (France), Doge Enrico Dandolo (Venice), Queen Tamara and Shota Rustaveli (Georgia), Prince Vsevolod the Big Nest (in Russia), Genghis Khan (Mongolia), Tsar Kaloyan (Bulgaria).

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.