Pre-Republic era

From Wikipedia of the Dark Jedi Brotherhood, an online Star Wars Club

The Pre-Republic era (—25,000 BBY) was the period before the formation of the Galactic Republic. It included the formation and evolution of all the species of the galaxy, the dawn of their civilizations and their first developments in space travel, and ended in approximately 25,000 BBY when the Republic was founded.

None Pre-Republic era
? BBY - 25,000 BBY
Republic era