Fǎguó dà gémìng tuīfān le jūnzhǔzhì, jiànlì le gònghéguó.
The French Revolution overthrew the monarchy and established a republic.
Tips
usage
君主制 is the system. Compare 君主 (monarch/ruler) and 共和制 (republican system). In Chinese political discourse, 立宪君主制 (constitutional monarchy) and 专制君主制 (absolute monarchy) are important distinctions.