republican system; republicanism
Refers to the political system in which the head of state is not a monarch, typically with elected representatives. Often contrasted with 君主制 (monarchy).
Japan is a constitutional monarchy, but many countries adopt a republican system.
Under a republican system, the president is generally the head of state.
After the revolution, the country established a republican system.
Some countries transition from a monarchy to a republic.
France has adopted a republican system.