The collapse of the Russian Tsarist regime in 1917, culminating in the abdication of Nicholas II and the end of the Romanov dynasty, is primarily associated with which specific stage of the Russian Revolution?

💡 Explanation:

The February Revolution (March 1917 by the modern calendar) was a spontaneous uprising rooted in severe food shortages and war fatigue, leading to the immediate collapse of the monarchy and the abdication of Tsar Nicholas II.