Long term economic and political discontent led to the 1905 revolution. Defeat by Japan brought the Tsar's rule into question. The Bloody Sunday massacre was an important short term cause.
From the late 19th century through to the outbreak of World War One in 1914, a series of threats to the Tsar's authority developed. At the end of the war these factors led to revolution and brought about the end of 300 years of Tsarist rule.
The first major threat came during the rule of Nicholas II in the form of the 1905 Revolution:
Strikes spread across the country and illegal trade unions were widespread.
Grand Duke Sergei, Nicholas II鈥檚 uncle, was assassinated near the Kremlin in Moscow.
A mutiny broke out amongst the sailors on the battleship Potemkin.
There was a general strike in October.
There are a number of long term and short term causes of the 1905 Revolution.