https://en.wikipedia.org/wiki/Congress_Poland

https://en.wikipedia.org/wiki/Crimean_Khanate

https://en.wikipedia.org/wiki/Decembrist_revolt

https://en.wikipedia.org/wiki/Grand_Duchy_of_Moscow

https://en.wikipedia.org/wiki/Ivan_the_Terrible

https://en.wikipedia.org/wiki/Kievan_Rus'

https://en.wikipedia.org/wiki/Massacre_of_Novgorod

https://en.wikipedia.org/wiki/Moscow_Print_Yard

https://en.wikipedia.org/wiki/Muscovy_Company

https://en.wikipedia.org/wiki/Nicholas_II_of_Russia

https://en.wikipedia.org/wiki/Oprichnina

https://en.wikipedia.org/wiki/Pale_of_Settlement

https://en.wikipedia.org/wiki/Pereyaslav_Articles

https://en.wikipedia.org/wiki/Pereyaslav_Council

https://en.wikipedia.org/wiki/Peter_the_Great

https://en.wikipedia.org/wiki/Rurik_dynasty

https://www.dw.com/en/russia-forest-bones-confirmed-to-be-last-tsar-of-russia-and-the-romanov-family/a-54223877

https://en.wikipedia.org/wiki/Treaty_of_Nystad

https://en.wikipedia.org/wiki/Tsar

https://en.wikipedia.org/wiki/Tsardom_of_Russia

https://en.wikipedia.org/wiki/Varangians