"The Republic's Great Manifest period (20,000–17,000 BBY) marked an increased movement into the Rimward territories of the Slice, which became known as the Expansion Region."
―From the text of The New Essential Chronology by Voren Na'al[8]

The year 20,000 before the Battle of Yavin (BBY) marked the end of the Expansionist Era and the beginning of the Great Manifest Period in the Galactic Republic. Now approximately five thousand years old, the Republic began a period of rapid expansion out from the Core Worlds and into the areas of Wild Space "east" of the galactic center. Other cultures, such as the Etti, had already begun Rimward migration. Further development and exploration took place in the Core as well. The planet Metellos, suffering from a lack of trade and overpopulation, began its attempt to blaze a new hyperlane connecting it to both Coruscant and points westward to alleviate these issues. Once completed, the route stretched from Coruscant to Orooturoo.


The Expansionist Era had marked a steady but limited growth to Galactic Republic space. Primary galactic settlement was confined to the Core Worlds, Hutt Space, the Herglic Trade Empire, and the Republic worlds that mostly lined the existing hyperspace routes. Exploration into the regions colloquially known as "Wild Space" and blazing new hyperspace routes were regarded as incredibly dangerous.[9]
Nevertheless, the Etti had already begun migrating out of the Core Worlds as a response to persecution at the hands of the Republic's "oppressive" and "tyrannical" government. These people had terraformed the planet Etti IV and settled far from the reach of Coruscant's bureaucracy.[10]

The galaxy in 20,000 BBY[]

The year 20,000 BBY marked the end of the Expansionist Era and the beginning of the Great Manifest Period, an era of expansion and exploration beyond the Core Worlds and the then–known galactic community which was nestled along the Corellian Run and the Perlemian Trade Route. The exploration was primarily contained to the "Wild Space" area, which later became known as the Expansion Region of the Slice.[9] About this time, the planet Metellos was facing the domestic problems of overpopulation and a lack of trade.[1] To remedy these, the planetary government commissioned the blazing of a new hyperspace trail to connect both eastward to Coruscant and to points westward.[9][1] Upon its completion, the Metellos Trade Route connected Coruscant to Orooturoo.[1]

It was also circa 20,000 BBY that the ancient Jedi Knight Roni von Wasaki was born.[11]


"The Republic's boom collapsed due to internal scuffling, as the planet Alsakan attempted to usurp Coruscant as the rightful galactic capital."
―From the text of The New Essential Chronology by Voren Na'al[8]

The Galactic Republic saw massive settlement in the Expansion Region and broader areas of the Slice as the Great Manifest Period continued. The growth was fostered by government-backed, corporation-sponsored settlement. Coruscant and Corellia were among the most active and prosperous planets at this time, striking the ire of rival world Alsakan. This later became the impetus that led to the Alsakan Conflicts. At the same time, the corporate-sponsored settlement caused planetary resources to be exploited and settlers left in poor conditions; many worlds eventually revolted.[9]

The goals established on Metellos to remedy its problems with trade and overcrowding were only marginally realized with the creation of the Metellos Trade Route. While the connection to Coruscant did increase some trade traffic, the largest gain was with planets westward, such as Orooturoo. At the same time, the opening of Metellos to the broader galaxy did relieve some of the overcrowding that had developed in the prior years.[1]

Jedi Knight Roni von Wasaki became known as a peace-keeper in the frontier sectors who rooted out criminal activity in those areas. Various crime lords then issued a bounty for his capture. Notwithstanding his success fending off would-be captors, he was apprehended by Leshy Drobo, Gammid, and the droid XT-8. The Jedi was encased in carbonite, but a botched murder resulted in the destruction of the hyperdrive in the transporting vessel. The ship drifted through realspace for nearly twenty thousand years until it was found by a group of soldiers who fought in the Galactic Civil War as members of the Alliance to Restore the Republic. During this long period of drifting, Wasaki was driven to insanity.[11]

Notable events[]

  • The Galactic Republic's Great Manifest Period began.[9]
  • Metellos attempted to establish a hyperlane connecting it with Coruscant and points westward to alleviate domestic problems. The new route stretched from Coruscant to Orooturoo.[1]
  • Roni von Wasaki is born.[11]

Behind the scenes[]

The date 20,000 BBY was first alluded to in the roleplaying game supplement Coruscant and the Core Worlds, published by Wizards of the Coast in 2003 while discussing Metellos and the creation of the Metellos Trade Route.[1] The Great Manifest Period, and its commencement in 20,000 BBY, was later mentioned in The New Essential Chronology[12] and The Complete Star Wars Encyclopedia.[13] Further development of the events within the Great Manifest Period were then published in the 2009 book The Essential Atlas.[9]

Other sources make reference to events that happened "more than twenty thousand years" before the Battle of Yavin, such as the Shadows of the Empire Sourcebook, which discusses the Etti fleeing persecution in the Core and settling on Etti IV. Nevertheless, the text states that this event had happened sometime prior to 20,000 BBY, at an unidentified time.[10]

The storyline of the Jedi Knight Roni von Wasaki is only published in the roleplaying adventure "Disturbance in the Force" in the magazine Challenge 66. As this source is not officially licensed, the canon nature of Wasaki and the storyline is ambiguous. This source lists the Jedi's birth year as approximately 20,000 BBY.[11]


Notes and references[]

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Coruscant and the Core Worlds
  2. The Essential Atlas establishes the endpoints of this era as 25,053 BBY and 20,000 BBY.
  3. The New Essential Chronology and The Essential Guide to Warfare established the endpoints of this era as 20,000 BBY and 17,018 BBY.
  4. SWTOR mini.png Galactic History on The Old Republic's official website (article) (backup link) dates the Tho Yor Arrival, as described in Star Wars: Dawn of the Jedi 0, to the year BTC 32,800 of the calendar based on the date of the signing of the Treaty of Coruscant. Since the difference between that calendar and the Galactic Standard Calendar—based on the date of the Battle of Yavin—was 3,653 years per the reasoning here, the Tho Yor Arrival must have taken place in the year 36,453 BBY of the latter dating system. Therefore, the difference between the Galactic Standard Calendar and the dating system based on the Tho Yor Arrival that is featured in Dawn of the Jedi: Into the Void must be 36,453 years.
  5. Star Wars: The Old Republic Encyclopedia places the Treaty of Coruscant, which served as the zero point of a calendar adopted by the Galactic Senate following the conclusion of the Great Galactic War per SWTOR mini.png Galactic History on The Old Republic's official website (article) (backup link), in the year 3653 BBY of the Galactic Standard Calendar, which was based around the date of the Battle of Yavin. Thus, the difference between the two dating systems is 3,653 years.
  6. The New Essential Chronology establishes that the zero point of the calendar introduced by Tarsus Valorum was the Ruusan Reformation. The book places that event in the year of 1000 BBY of the Galactic Standard Calendar—which was based around the date of the Battle of Yavin—therefore establishing a difference of one thousand years between the two dating systems.
  7. The Essential Atlas places the Battle of Yavin, the zero point in the Galactic Standard Calendar per The New Essential Chronology, in 35:3 under the Great ReSynchronization dating system. The Essential Atlas also places the Battle of Selaggis on 43:2:28 and the Battle of Dathomir on 43:3:21. The Essential Guide to Warfare and The Essential Atlas both place the Battle of Dathomir in the year 8 ABY of the Galactic Standard Calendar. The Essential Guide to Warfare also places the Battle of Selaggis in 7 ABY, confirming the placement of the division between each Galactic Standard Calendar year as the third month in the Great ReSynchronization year. Thus, there is a two-month gap between the two dating systems, with the first two months of a GrS year being the last two of the preceding Galactic Standard Calendar year, and there is a total difference of 35 years and 2 months between the two systems.
  8. 8.0 8.1 The New Essential Chronology
  9. 9.0 9.1 9.2 9.3 9.4 9.5 The Essential Atlas
  10. 10.0 10.1 Shadows of the Empire Sourcebook
  11. 11.0 11.1 11.2 11.3 ChallengeLogo.png "Disturbance in the Force"Challenge 66
  12. The New Essential Chronology
  13. The Complete Star Wars Encyclopedia

Expansionist Era
(25,053 BBY20,000 BBY)
Galactic timeline

Previous: Pre-Republic era ( –25,053 BBY)

Next: Great Manifest Period (20,00017,018 BBY)

Years of the Expansionist Era
25,053 BBY · 25,000 BBY · 24,953 BBY · 24,500 BBY · 24,000 BBY
23,900 BBY · 23,643 BBY · 22,800 BBY · 22,000 BBY · 20,100 BBY
20,000 BBY
Great Manifest Period
(20,000 BBY17,018 BBY)
Galactic timeline

Previous: Expansionist Era (25,05325,000 BBY)

Next: Indecta Era (17,01815,000 BBY)

Years of the Great Manifest Period
20,000 BBY · 19,997 BBY · 19,000 BBY · 18,780 BBY · 17,018 BBY