Final answer:
The revolution grew more violent due to economic hardships, class struggles leading to an aristocracy resistant to change, and a reactionary backlash against revolutionary changes, which included the rise of the guillotine during the Terror.
Step-by-step explanation:
Three reasons the revolution grew more violent are closely linked to the political, social, and economic turmoil of the era. Firstly, widespread economic hardship and famine heightened desperation among the populace, leading to a radicalization of demands and tactics.
Second, the struggle between different social classes, particularly with the aristocracy's resistance to losing traditional privileges and the middle class's exclusion from political power, fueled deeper divides and subsequent violence.
Finally, the reactionary backlash from within and outside of France against revolutionary ideals and the rise of the guillotine during the period of the Terror mirrored the fear and opposition to the rapidly changing social order, leading to violent reprisals.