… began in Russia on this date 90 years ago.
The February Revolution was the first stage of the Russian Revolution. Mostly bloodless, it led to the abdication of Tsar Nicholas II. Ultimately, the regime that began in the February Revolution was replaced during the October (Bolshevik) Revolution.
Here’s some contemporary reports from The New York Times.
[Russia was still using the Julian Calendar in 1917. Hence, March 8 elsewhere was February 23 in Russia; November 7 was October 25 .]