What event in March 1917 (by the modern calendar) forced the abdication of the last emperor and ended over three centuries of one dynasty's rule?

• A The October Revolution
• B The February Revolution ✓
• C The Decembrist Revolt
• D The 1905 Revolution

The February Revolution (in March by the Gregorian calendar) began with strikes and food riots in Petrograd and led to Nicholas II's abdication on 15 March 1917.