aug 1, 1914 - Russia on the Verge of a Revolution (no specific date, just after Russia joined WWI)
Description:
After their many losses during WWI, Russian citizens were not happy. The losses, along with famine and a general absence of money put Russians citizens on the verge of a revolution. This is significant because it led to the Bolshevik Revolution and the formation of the USSR.
Added to timeline:

Russian Revolution Timeline
Date: