The end of the Merethic Era did not occur because myth suddenly gave way to certainty. Instead, later historians chose a conventional point from which Tamrielic chronology could be measured more continuously.
That point was the founding of the Camoran Dynasty in Valenwood under Eplear, traditionally dated to 1E 0.
The beginning of the First Era therefore marks a change in historical reckoning rather than the sudden birth of civilization.
Before 1E 0, Valenwood remained politically fragmented among Bosmeri clans, local rulers, and sacred communities.
The rise of Eplear and the creation of the Camoran Dynasty established a lasting political structure powerful enough to become a major chronological reference point.
Later historians used this event to mark the end of the Merethic Era and the beginning of the First Era.
The choice was practical as much as symbolic. From this point onward, historical records became easier to compare across regions.
The designation 1E 0 became the anchor for later Tamrielic chronology.
Events before this date were placed within the Merethic Era and often assigned approximate reverse dates. Events afterward could increasingly be recorded through continuous year counts.
This does not mean that earlier peoples lacked calendars, archives, or historical memory. Ayleids, Altmer, Dwemer, Falmer, Chimer, and other cultures had maintained records for centuries.
The distinction lies in later historical organization, not in the presence or absence of civilization.
The transition into the First Era occurred while several major transformations were already underway.
Atmoran migration had begun altering northern Tamriel. Falmer and human settlement were moving toward open conflict. Chimer and Dwemer communities shared Resdayn amid persistent religious and territorial tension. Ayleid kingdoms still dominated the Heartland, while human populations remained divided between tributary, independent, and enslaved communities.
The Orsimer remained scattered, the Direnni held influence in High Rock, and Bosmeri unification was only beginning.
The First Era inherited these conditions rather than replacing them.
The final generations of the Merethic Era were especially important in the north.
Saarthal, the Night of Tears, the return of Ysgramor, and the campaigns of the Five Hundred Companions would eventually break much of the old balance between Atmoran settlers and the Falmer.
These events helped create the foundations of later Nordic dominance in Skyrim.
At the beginning of the Age of Myth campaign, however, this outcome has not yet been decided. The Falmer remain a major civilization, Atmoran settlements are still expanding, and the great wars of the north remain ahead.
The Ayleid kingdoms survived the end of the Merethic Era.
White-Gold remained the greatest center of their power, and Ayleid rulers continued to govern much of the Heartland.
The human uprising associated with Alessia would not occur until well into the First Era.
This is important because the beginning of recorded history did not immediately create the political world familiar from later ages. Ayleid civilization remained dominant for centuries after 1E 0.
The Chimer and Dwemer also entered the First Era without undergoing immediate transformation.
The Chimer had not become Dunmer, and the Tribunal had not risen. Clan structures continued to develop, but the Great Houses were not yet identical to their later forms.
The Dwemer remained a living civilization with active cities, engineers, scholars, and rulers.
Their disappearance lay far in the future.
Later scholars often used the beginning of the First Era as a dividing line between mythic and recorded history, but the distinction remained imperfect.
Gods, Daedra, dragons, prophecy, magical disasters, and legendary figures continued to influence events after 1E 0.
Likewise, many events before 1E 0 were documented in writing.
The division between the Merethic and First Eras is therefore chronological rather than metaphysical.
Tamriel did not become less magical when the calendar changed.
For people living during the Age of Myth, the First Era does not yet exist.
They do not know that later historians will classify their lives as part of the Merethic Era. They do not know which kingdoms will survive, which peoples will disappear, or which rulers will become legendary.
The rise of the Camoran Dynasty, the fall of the Falmer, the Alessian Rebellion, the transformation of the Chimer, and the disappearance of the Dwemer all belong to an uncertain future.
What later ages call history is still being created.
The Merethic Era ends with 1E 0, but its world does not end with it.
Its peoples, conflicts, religions, and political powers continue directly into the First Era. The new calendar simply provides later historians with a more stable framework for recording them.
The boundary between the two eras is therefore best understood as a historical convention: a line drawn across a world already in motion.