• c. -34800 DR
  • The sarrukh establish the realm of Mhairshaulk, on the Chultan Peninsula westward from the Lhairghal to the Jungles of Chult.  The Mhairshaulkans are believed to have created nagas, pterafolk, troglodytes, and yuan-ti, as well as numerous other races long since lost. »

  • -34,000 DR
  • It is believed that the first human appear in the northern savannas of Katashaka. They soon migrate outward to populate the rest of the world.

    In the lands south of Mhairshaulk, human tribes depended on fishing, hunting and herding to sustain themselves. The tribes of Lopango, however, utilize irrigation techniques which allowed them to take up pastoral farming.

    Unfortunately the proximity of primitive human tribes to Mhairshaulk proved disastrous. Sarrukh raiding parties routinely patrolled Thinguth lands returning to Mhairshaulk with humans for food or slavery. A few are experimented upon by their sarrukh captors. Tainted and augmented by sarrukh magic, these unfortunate individuals in time become known as vrael olo, the yuan-ti. »

  • c. -33500 DR
  • Fall of Mhairshaulk
    Sarrukh-ruled Mhairshaulk, faced with starvation, declines gradually, sinking slowly into somnolence. The sarrukhs begin a cycle in which thousand-year hibernations alternate with brief periods of activity, during which food gathering and procreation could take place. The empire becomes the domain of the yuan-ti.

    With the fall of Isstosseffifil, this marks the Fall of the Sarrukh Empire. »

  • Couatle War
  • c. -24000 DR to -23000 DR
    For centuries the couatls (Called into service by the god Ubtao, an army of winged serpents arrives in the jungles of Chult from Maztica) and the yuan-ti battle each other for control of the Chultan Peninsula. Time and again the yuan-ti are forced to concede their westernmost holdings to the couatls, until the war ends in a stalemate with the Hazur Mountains as the dividing line between the two territories. »

  • c. -24000 DR
  • Yuan-ti ruled Mhairshaulk has all but collapsed, thanks to repeated assaults on its cities by the great wyrms of the south. »

  • c. -3000 DR
  • The couatls seek out another race to keep the western end of the Chultan Penninsula free of yuan-ti influence. On a distant continent southwest of Faerun, the couatls begin to preach the teachings of Ubtao to the indigenous human tribes. »

  • -2809 DR
  • Long enslaved human tribes of the eastern jungles (Mhair Jungles), known as the Lapal, rebel against their serpentine masters (yuan-ti). »

  • -1732 DR
  • After centuries of intermittent clashes with the ruling yuan-ti, the Lapal tribes flee north and east. They settle on the southern shores of the Shining Sea and in the lands that would one day become Halruaa.

    After the Lapal tribes escape their yuan-ti masters, the serpentfolk import large numbers of lizardfolk from the Great Swamp of Rethgild. Upon reaching the shores of the Lapal Sea, many of these lizardfolk either escaped or were released into the territory claimed by the Thinguth humans. »

  • -690 DR [Year of Fragile Beginnings]
  • Threatened by renewed attacks from the yuan-ti, the Lapal tribes along the Shining Sea come together and establish the nation of Lapaliiya. The city of Sheirtalar is named the capital. »

  • -320 DR [Year of Netted Dreams]
  • The ophidians of Najara summon the Hss'tafi tribe of yuan-ti from the southern jungles of Chult to increase their strength against the rising power of the Netherese survivor states. The yuan-ti establish themselves as Najara's ruling caste. »

  • -304 DR [Year of Erupting Crypts]
  • The serpent god Sseth, an avatar of Merrshaulk, founds the yuan-ti empire of Serpentes amid the ruins of the ancient sarrukh-empire of Mhairshaulk. »

  • -289 DR [Year of Shattered Havens]
  • The Thinguth are enslaved by the yuan-ti of the Sseradess and Sauringar tribes and dispersed across all of greater Thindol, which at this time includes lands now claimed by Samarach. »

  • -189 DR [Year of Sunned Serpents]
  • The lizardfolk/yuan-ti armies of Serpentes complete their conquest of the Tashalar. Most of the wealthy Calishite expatriates flee back to their native land. »

  • 10 DR to 20 DR
  • During this time, Tashalarans overthrow their yuan-ti satrap and drive the Se'Sehen tribe from the Tashalar. »

  • 10 DR [Year of Dreams]
  • The realm of Serpentes goes into rapid decline when its emperor Sseth vanishes beneath the Peaks of Flame. The once-allied yuan-ti tribes begin to feud over the succession.
    Ss'inthee'ssaree, capital city of Serpentes, falls into ruin. »

  • 34 DR [Year of Purloined Power]
  • With the decline of Serpentes, the humans of the Tashalar succeed in driving off the yuan-ti of the Se'Sehen tribe and after a ten-year war proclaim the Confederation of Tashtan. They claim dominion from the town of Narubel to the Sheir Penninsula, plus all the Shining Sea coastal lands in between including Lapaliiya. The diverse humans living in these areas become known collectively as the Tashalans. »

  • 90 DR [Year of the Moor Birds]
  • Terpenzi assembles a great army of ophidians commanded by yuan-ti to attack the growing might of Ebenfar. The armies of Ebenfar destroy the city of SS'thar'tiss'ssun, cloak its ruins in powerful warding spells, and scatter the serpentfolk of Najara. Terpenzi leads its remaining armies into battle with the Shadowking, but is destroyed. The battlefield becomes known as the Fields of the Dead. »

  • 450 DR [Year of the Corrie Fist]
  • The people of Thindol achieve independence for the first time in centuries, albeit under the subtle influence of yuan-ti agents who had infiltrated the ruling corridors of power. »

  • 557 DR [Year of the Melding]
  • Nejizar sends yuan-ti infiltrators south to the Reaching Woods to incite the hobgoblin tribes to march against Phalorm. Ultimately the hobgoblins are repelled and the serpentine provocateurs assassinated. This defeat forces the serpentfolk of Najara to retreat into the Serpent Hills. »

  • 605 DR [Year of Many Serpents]
  • The people of Thindol on the Chultan Pennisula unmask a host of yuan-ti infiltrators in their midst, leading to months of anarchy as the serpentfolk are rooted out and slain. The citizens of western Thindol, alarmed at events, marchel a great flotilla of ships and sail for the fabled isle of Nimbral, but a great storm wrecks much of the fleet against the Beacon Rocks. Seeing their plight and moved at their entreaties for aid, Lord Samar of Nimbral, a mighty archmage, agrees to return with them to their homes and battle the yuan-ti. »

  • 606 DR [Year of the Kindly Lich]
  • The western Thindolese, with the aid of Lord Samar and Nimbral, drive the yuan-ti from their Sanrach Basin home. After the yuan-ti are defeated, Samar cloaks the mountain passes and roads to the realm in veils of illusion, protecting the region from further infiltration by the serpentfolk. In time, the western Thindolese begin calling their isolated land Samarach in honor of their savior and consider themselves a vassal state of distant nimbral. The eastern Thindolese retain the name of Thindol for their realm and are ruled by a council of cities. »