Rasputin in a notorious character of History, to which country did he belong?

Explanation
Grigori Yefimovich Rasputin was a Russian mystic  He was born in the Russian Empire  in Pokrovskoye, Siberia in 1869. He became influential at the court of Tsar Nicholas II and Empress Alexandra.   He was known for improving the condition of Aleksey Nikolayevich, the hemophiliac heir to the Russian throne.  He was assassinated by a group of noblemen, including Prince Felix Yusupov  in 1916 in Petrograd (now St. Petersburg). He was poisoned, shot, and thrown into the Neva River.