republic
US /rəˈpʌb.lɪk/
UK /rəˈpʌb.lɪk/

1.
república
a state in which supreme power is held by the people and their elected representatives, and which has an elected or nominated president rather than a monarch.
:
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The country transitioned from a monarchy to a republic.
O país fez a transição de uma monarquia para uma república.
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Many modern nations are republics.
Muitas nações modernas são repúblicas.