Probably when Tsar Nicholas II was shot along with his family by revolutionaries after the October revolution in 1917.
The most famous event in Russian history was the October Revolution itself, because it changed the government, society and economy of the largest country in the world. It led to Russia getting out of World War 1. It led to the Russian Civil War. It then led to the murder of the Tsar, which was a side issue of the Revolution and Civil War and changed nothing. In terms of the ultimate effect on an entire country, neighboring nations and future history, the October Revolution is the most famous moment in Russian history.
Stalin
One of the most famous rulers of the Russian Empire
WW2
At the moment, it's Haruki Murakami (worldwide most famous, but also in Japan)
Venerable Bede was the father of English History. History of the English Church and People was his most famous book.
Usman.
Stalin
Sandra
I dont have one
One of the most famous rulers of the Russian Empire
WW2
the Russian Five.
jessie j!
Oldboy and A Moment to Remember are two of the most famous Korean films to date.
At the moment, it's Haruki Murakami (worldwide most famous, but also in Japan)
Mecha-Streisand
The most famous of them all is the RMS Titanic