Heres a Sith time line taken from the dark side book, its really abbrivated but I didnt want to tpye 4 pages of info. So enjoy
25k Years before BOY (battle of Yavin)
hyper drive was perfected. Galactic Republic Forms
first force therois develope,
first dark side uprising took place, attle lasted more that an century, dark side lost exhiled beyonf known edges of space
Sith Empire was born
vanquished Jedi found a primitive civilization called the Sith, they welcomed the Jedi as gods, darksideers dominated them forged sith emipreand a evil age of 1000 years began form the farthest borders of the republic. Each side forgot the other as the millennia passed.
The great Schish that divided the early Jedi became a legend.
5,000 tear BOY
Sith grew while republic flurished.
Sith develop Sorcery and other dark side powers.
Great Lord Marka Ragnos died leaving a power vacm, civil war was coming but Rival leader Nagan Sadow and Ludo Kreesh struggeld for crown
Pair of republic mappers Starbreaker 12 stumpled upon the Sith, each rival used them intehre own way.
Following Starbreakers 12 back to republic space Naga Sadow and his Sith forces Ignited the great Hyperspace War.
Eraly battles in Sith Favor later on Republic gained the advatage. Republic after a long and bloody battle rallied there forces and reppeled the invaders. Sadow and his battered ship return to Sith Space-and right into an ambush.
Ludo Kresh and his loyalists had survied the earlier struggles and awaited Sadows returing fleet. Both sides where crushed in the battle. Pursuing Republic arrived and vanquiahed the Sith in a hail of blaster fire.
Naga Sadow escaped however went into hinding on the jungle moon of Yavin, where his loyal Massassi built gret temples in his honor. Used Sith sorcery and technology to place him self in suspended animation.
4,400 year BOY
Freedon Nadd an Jedi Knihgt sets of to Yavin Moon to invesagate dark powers. After brief struggle with the Massassi guarding the area, Nadd awaked the Spirt of Sadow, asked dark lord to teach him the sorcerous ways, Sadow agreed taught him powers the Jedi had not seen in centuris, Nadd leaves to planet onderon.
Using Sith magic and dark side nadd made him self leader of the primative inhabetents, he was a tyrannical ruler and eventaully subjects rebbellds. For centures Nadda ans his subjects worked for centureis to crush the rebbellion but to no avail. Even using the powers provided by Nadd's sarrcophagus-a focus of dark dies energy-his decedents could not end the bloody civil war.
Satal and Allema Keto steal sith book from Courscant and made way to Ondeoron where Nadd spirt arose to greet them. With Nadd's teeaching and weath of Sith artifacts Retured to Emoress Teta system to find a way to restore Sith Empire.
Jedi Knight imposed orfer on ONderon and sealed NAdd's coffin in an armoured tomb on the moon of Duxon
The pair using Sith poers take over the system while republic and a group of Jedi knights are sent to restore order. A young Jedi by the name of Exar Kun goes to find Freedon Nadd's tomb.
Nadd's spirt gives wealth of information and celing collapses on Kun, Nadda using dark powers repair Kun and save his life.
Mean wihle the battle for the Empress Tetal system contunis as Jedi meet to discuss such a disturbance in the force Satal and Alemma inleash Sith war droid killing the great Jedi master Arca.
Kun nect traveld to Yavin 4 where his new found powers helped him destroy the spirt of Freefon Nadd. Proclaimed himslef the Dark lord of the Sith. Later he joined withanother fallen jedi, Ulic Qel-Droma. The 2 vowed to bring back the Sith
Exar Kun convereted many weak Jedi to Sith as he traveld across the Republic as a prophet an dark teacher. Ulic Qul-droma went over strategic plans and Began Sith War. Exar Kun sent his converts on a misiion to destroy there ex masters. Only a dew succeeededm the news of the assassinf striking atJedi MAsters spread fear throguh the republic.
Bitter war continued until Ulic killed his own borotehrm the Jedi Cat. with this horrific act Ulric realized the Sith war mush end. He offered to help the Jedi, and soon the ride of battle turned. Exar Kun went back to Yavin to and used Sith sorcery to preserve his spirit in ancient pyramid. Kun survived trapped for millenia in a prison of his own devising but the Sith war was over.
The disgraced Ulic went into exile after the Sith war. Ten yers later Vima tha daughter of Jeid Nomi Sunrider, sought him out. She wanted Ulic to teach her the ways of the force. He relucatanly afreed, during this time Ulic found redemption and died a Jedi Master.
Sith disapperared into the shadows of history and the glory days of the Sith was all but forgotten.
Term Sith used to describe sect of dark side users. Teaching of the Sith appear every so often to threaten the Republic, then 2 millenia beofre the Galactic Civil War, a rouge Jedi Knight Turned away from the Jedi code to form a new Sith Cult. As Exar Kun before him he attracted many followers.
The new Sith declaore war on the republic. The Battles were firece and the Jedi rose to fight the Sith, but in ht end Sith fell to there own interanl struglles, unwilling to share power Siths disiples destroyed each otehr
Sith Lord Kaan survied the blood bath and gathered 20,000 devotes to establish an empire deidcated to rule by the Strong. Kaan's Brotherhood of darkness met Jedi Master Hoth's Amry of light on the Planet Russen, Both Sides where decimated but eventaully the Sith where destroyed
or so hte Jedi thought
One Sith Lord Darth Bane escaped. Bane selected one apprentice to keep the Sith knowledge alive, otherwish the the sith lived in an existance of stealth and decrescy.
The Sith went into hidin, foloowing Darth Banes edict the "rule of two" next 100 years Sith meditated and planned in isolation once more on how to strike down the Jedi.
well you knwo the rest