Mountainous Republic of the Northern Caucasus ended in 1920.
Republic of Mountainous Armenia ended in 1919.
Autonomous Republic of Northern Epirus ended in 1914.
Viceroyalty of the Caucasus ended in 1917.
Provisional National Government of the Southwestern Caucasus ended in 1919.
Ireland was split into Northern Ireland, taking up 6 counties, and the Republic of Ireland, taking up the remaining 26
Juliius Caesar became dictator at the end of the Roman republic.
Juliana Republic ended in 1839.
Khmer Republic ended in 1975.
Novgorod Republic ended in 1478.
Cisrhenian Republic ended in 1803.
Transpadane Republic ended in 1797.
Republic of Negros ended in 1901.