What follows is a
lot of artistic license on my part. I mean, we're given basically fuckall in the real lore for what's going on, so I figured I'd make it up myself. Here we go.
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While most of the world's recorded history has focused on the continent of Tamriel (and even that is infamously patchy and incomplete), even less is known about the history of the continent across the Padomaic Ocean, Akavir. Even acknowledging this, the two continents have at times had intersecting histories, most often one of conflict between various polities and forces on each continent. For our purposes, dates will be given in the Tamrielic Era Count, and we will begin in 1E 2700.
At this time the four major nations of Akavir had coalesced around the four primary races of the continent: the reptilian Tsaesci, the tiger-like Po Tun, the monkey-like Tang Mo, and the ice-demons known as the Kamal. There had previously been other races, notably the Dragons and a local race of Men, but through many conflicts the belligerent and warlike Tsaesci had exterminated nearly all of them, the only survivors being the enslaved
Hуnglуng (Red Dragons) and the Hilуng (Black Dragons) that fled to the Po Tun, who call themselves the Bao Tъn (цo). This in turn led to conflict between the Tsaesci and the Bao Tъn known as the War of the Black Skies, which killed all of the remaining dragons of Akavir and left both the Tsaesci and the Bao Tъn severely weakened, so weakened in fact that the Bao Tъn domain shattered into many smaller warlord states fighting each other for dominance. The Tang Mo meanwhile lived scattered across many islands, regularly harassed by both the Tsaesci and the Kamal to the north, and periodically in conflict with the Bao Tъn.
In 1E 2703, the First Padomaic War began when a large Tsaesci fleet sailed across the ocean to invade the eastern coast of Tamriel, pushing through Morrowind and Skyrim as far as the Jerall Mountains marking the modern boundary between Skyrim and Cyrodiil.
However, by landing in Morrowind the invaders had arisen the anger of Vivec
, who allied with the Trident-Kings of the Dreugh
and cut off the Tsaesci supply lines and their route to the sea. This invasion, while devastating, was a categorical failure and met its defeat at the hands of the newly-founded Reman Empire. The remnants would be integrated into the new empire as the legendary Blades, personally loyal to the Emperor as his secret service and bodyguards. In Akavir itself however, fortunes were declining rapidly. The defeat of the Tsaesci Invasion had left their Potentate in shambles, though any threat from the Bao Tъn was nonexistent.
In the lands of the Bao Tъn, a warlord known as
TuM Z+ had risen to prominence, so brutal and violent in his means of conquest that the spirits of the land rose from the blood he'd spilled to attack and harass his armies. Forsaken by the spirits, his army fell apart, and yet he had been the one to come the closest to reunifying the shattered lands of the Bao Tъn. His decline and defeat would only send the Bao Tъn further into the ongoing
Zhаnguу Shнdаi ("Warring States Period"), only now with increased ferocity as the warlords sought not only to expand their own lands and holdings but to follow in TuM Z+'s footsteps and potentially reunify the lands of the Bao Tъn for themselves. The conflict would last for centuries, only broken by the periods where warlords would form coalitions to resist attacks from the Kamal, Tsaesci, and Tang Mo.
The Second Padomaic War would break out in 2E 572. Led by King Ada'Soom Dir-Kamal, the Kamal would invade northern Tamriel in a devastating surprise attack that sought to capitalize on the ongoing chaos engulfing Tamriel in the Interregnum Period. Lacking any real strategy of invasion beyond "conquer the continent", the Kamal attack pushed through eastern Skyrim and most of Morrowind, broken only by the cooperation of the Nords, Dunmer, and Argonians. While the invasion would again fail, the subsequent cooperation would end up helping to forge the Ebonheart Pact, leaving the eastern coast of Tamriel unavailable for attack. The Tsaesci would capitalize on this weakness in their own Invasion of the Snows, pushing all the way into the north before a combination of a Tang Mo uprising and the annual thawing of the Kamal in Spring of 2E 575.
Following this chaos, the situation in Akavir would fall into a stable four-way war between the Bao Tъn warlords, the Tsaesci Potentates, the Tang Mo confederacies, and the periodic raiding by the Kamal. It's possible that this may have continued indefinitely had it not been for the Third Padomaic War of 3E 288-290. Uriel Septim V spent nearly 20 years preparing for the invasion of the continent itself, and the actual invasion failed within 2 years with both the catastrophic destruction of the invasion forces and the death of Uriel Septim V himself at the Battle of Ionith in 3E 290. The Tsaesci Potentate managed to survive, but in its weakened state a Bao Tъn warlord named
TuMshйn Lka ("Tosh Raka") managed to capitalize on the weakness of the Tsaesci by unifying a coalition of armies to invade the Potentate in 3E 307, and before the final battle achieved transformation into a "Tiger-Dragon" (Hulуng), decisively defeating the Tsaesci and laying waste to their capital.
With this victory and his ascendancy, TuMshйn Lka became the first ruler of a unified Bao Tъn in thousands of years, reshaping the war-torn society into the new Tiger Dragon Empire (NЌ), the "Ka Po Tun"). Having finally achieved the unity of the Bao Tъn, their society rapidly recovered and centralized around TuMshйn Lka as an autocratic god-emperor, rebuilding cities and rapidly regrowing their devastated population with the stability afforded by peace. Indeed, when the Oblivion Crisis of 3E 433 came, the Bao Tъn were the only force to successfully resist the Dremora invasions while the Tang Mo and Tsaesci were thrown into chaos. In fact it would be the invasion of the Dremora that led to the Treaty of the Golden Thread (СЪќ) that ended hostilities between the Tang Mo and the Tiger Dragon Empire, and would lay the ground for the Tang Mo themselves being integrated into the Empire as a protectorate.
While the Tamrielic Empire was in decline, the Tiger Dragon Empire was experiencing a rapid period of growth and expansion, successfully invading the Kamal and pushing them as far back as the Lake of Demons. This rise coincided with further conflict between the Tsaesci and the Bao Tъn, where the Empire and the Potentate would clash repeatedly with near-constant victories for the rapidly strengthening Bao Tъn and their Tang Mo allies. The most recent conflict would be the War of the Yellow Sword from 4E 182-192, in which the Empire and the Tang Mo pushed deep into the Potentate and conquered nearly half of its land, collapsing the Potentate's government and firmly establishing the Empire as the dominant power of Akavir. What little contact exists between the fractured continent of Tamriel and Akavir seems to imply that TuMshйn Lka's ambitions go further still. Not only does he intend to conquer and utterly destroy the Tsaesci and the Kamal, but when all of Akavir is under his control he intends to begin a "Fourth Padomaic War" to conquer Tamriel, and from there the entire world...

https://www.deviantart.com/mobiyuz/art/The-Elder-Scrolls-Akavir-4E-201-861164209