In which city did Russian working-class women lead a series of strikes in March 1917?

Russian working-class women led a series of strikes in Petrograd (formerly St. Petersburg) in March 1917. These protests were driven by dire food shortages and harsh working conditions, and they played a crucial role in sparking the February Revolution. The strikes and demonstrations ultimately contributed to the abdication of Tsar Nicholas II and the end of the Romanov dynasty.