| ca 24,000 BBY |
| War breaks out between the Republic and the Tion Cluster. The Republic claims victory after forcing the Hutts into the conflict against the Tion. |
| The New Essential Chronology. |
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| ca 22,000 BBY |
| The planet Nubia is first settled. |
| Coruscant and the Core Worlds Sourcebook. |
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| ca 20,000 BBY |
| The Republic's Great Manifest Period begins, lasting for three thousand years. In this era, the Republic will extend its territories into what will be known as the Expansion Region. |
| The New Essential Chronology. |
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| The Etti race unites in opposition to the rule of the Republic.They form a fleet and search for a new world far from the Republic. |
| Shadows of the Empire Sourcebook, via Time Tales. |
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| ca 17,000 BBY |
| The first of the Alsakan Conflicts erupts. The rebellious leaders of Alsakan will continue to fight the Republic in seventeen separate conflicts over the next several thousand years. |
| The New Essential Chronology; The New Essential Guide to Characters. |
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| Rogue Arkanian scientists relocate a group of Xextos from Troiken to a newly-terraformed planet in the Quermian system. After generations of genetic tinkering, the Xextos will be turned into a new species called Quermians. |
| Alien Anthology, via Time Tales. |
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| ca 16,000 BBY |
| Sith warlord, King Adas, conquers his home planet. |
| Tales of the Jedi Companion, via Time Tales |
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| 15,500 BBY |
| The Republic first makes contact with the Duinuogwuin, a race known as the Star Dragons. |
| The New Essential Chronology |
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| 15,100 BBY |
| The Anomid race develops hyperspace technology. |
| Galaxy Guide 12: Aliens – Enemies and Allies |
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| ca 15,000 BBY |
| The Aqualish (Aquala and Quara) fight a civil war, and an offworld exploratory vessel lands on their world. The two races unite to kill the visitors, while taking their ship intact. |
| The Essential Guide to Alien Species. |
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| The Hutts take over the planet Evocar in the Y'Toub system, displace its citizens, and rename it Nal Hutta. They move their entire civilization to this world, abandoning their homeworld Varl. |
| The Essential Guide to Alien Species. |
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| Republic Fleet Systems is formed to design warships to counter the threat of Sith-backed uprisings in the distant corners of the Old Republic. |
| The Essential Guide to Vehicles and Vessels. |
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| The planet Dahrtag is settled by a religious order sickened by the way galactic civilizations are merging into each other. The order encourages various cultures to bury their dead there, and Dahrtag becomes known as Necropolis, "City of the Dead". |
| Alien Anthology, via Time Tales. |
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