The Mere was created in 615 DR. After the armies of Phalorm were overrun by the Horde of the Wastes in 614 DR, the few that had rallied made their stand at Iniarv's Tower, a tower that had once belonged to Iniarv Uskevren, the former Mage Royal of Selgaunt and member of the power House Uskevren. Unbeknownst to all, Iniarv had retreated into the tower's crypts to become a lich. He was awakened by the orcs and enraged by the commotion. King Uth VII begged him for help, calling upon Iniarv's ancient alliance with Uthtower. Iniarv acquiesced, calling on the ocean to flood the entire area, killing all goblinoids and humanoids alike. When the waters receded, all that was left was a saltwater swamp. The land was never permanently resettled, although there were a few attempts that were thwarted by the wetlands and strange monsters released by Iniarv.
The Weeping War was a battle that culminated on 15 Flamerule, 714 DR, in which the Akh'Velahr (the army of Cormanthor) were defeated by the invading demonic forces named the Army of Darkness, leading to the fall of the elven city of Myth Drannor, the greatest and most powerful bastion of civilization by far at the time. https://forgottenrealms.fandom.com/wiki/Weeping_War
Fleeing the cruel life below in Drow society, Eshenesra (pregnant with her daughter Eilistraee ) an enclave of Drow including Arthur DeLarosa ventured to the surface fending off Dryders and drow warriors guarded by the goddess Eilistraee.
Around the Year of the Lost Helm, 1329 DR, the popular adventurer Nasher Alagondar became ruler of the city of Neverwinter. His rule brought prosperity to the city, and was considered uneventful until the Year of Wild Magic, 1372 DR.
The Time of Troubles, also known as the Arrival, the Godswar, and the Avatar Crisis, was a cataclysmic time period in the chronology of Faerûn. Taking place during 1358 DR, the Year of Shadows,[2] the Time of Troubles was a period during which the deities of Faerûn were forced to walk the earth in their mortal avatar forms. Several major deities died during the Time of Troubles (see Deaths, Ascensions, and Resurrections) and a handful of mortals rose to divinity.[3]
The Spellplague is a malady that struck Realmspace on 29th Tarsakh, 1385 DR and was caused by Mystra's assassination at the hands of Cyric and Shar. With the goddess's death, the Weave, the universal structure of arcane forces, convulsed. It continued for a decade, leading to the Wailing Years, during which time arcane magic ceased to function and the planet of Toril was transformed.
Mount Hotenow erupts and destroys most of city. A great chasm is torn through the south-eastern sector due to the ensuing earthquake.
City is taken over by Dagult Neverember, Lord of Waterdeep. He is responsible for the rebuilding of Neverwinter to its former glory.
Crimson Corps lost power and numbers after their army was decimated at the Battle of Greenest.
KoA set time forward 7yrs 1491 -> 1498