So in skyrim people often mention when dragons ruled over tamriel and then they were overthrowm by men. So when exactly did this happen and where, I thought the first men came to tamriel from Atmora led by Ysgromer and eventually kicked out the elves so was it during Ysgromer's dynasty? i am very very confused plz help!

I'm no expert on the subject, but I believe that men originated on Tamriel in the early days of the Dawn Era, and that this is when all that Dragon Wars malarkey occurred. Then somehow, at some point, the proto-Nords left Tamriel and ended up in Atmora, from whence Ysgramor returned in the 1st era.

Men arrived on Tamriel at the beginning of the Merethic era crow. Like the OP said, when Ysgramor and his son's were escaping civil war on Atmora. They arrived, were pushed out by elves during the night of tears, then came back and killed the elves, Falmer.

As for when the conflict with dragons began, I think later in the merethic? While Lady N will say in the dawn era, I don't know of any conclusive proof as to when or why. The dragon wars on Tamriel began when the dragons were to controlling of the new humans inhabitants who worshiped them. The humans rose up and began the dragon wars. As to how they proceeded, well the dragons were wiped out so, obviously bad for the dragons.

Come to think of it, dragons existed on Atmora so maybe this is when the dragon wars really began.

Just the Nords.

We need to bring everyone into the Fourth Era with that there scholarship.

Well dragons arrived before mortals so it could have been the dawn era what i don't get is the tablets on the way to high hrothgar say that the first empire formed after man's victory but idk whether this refers to ysgromer or possibly the very first government by man.

Correct me if I'm wrong here, but The Nords aren't related to the imperial.
In Oblivion people make reference to the Nibean people being different to the Colovian, but all falling under the Cyrodiilic banner.

There is a similar thing with Skyrim and the Forsworn though somewhat more violent.

So it is entirely possible that the Nords did in fact come from Atmora and never have had set foot on Tamriel until the time of Ysgramor.

Its also important to remember, that according to Nordic Mythology they were long lived, like the Mer until a god (I forget which) was tricked into cursing them with a short lifespan.To my knowledge, this was never the case with any other human race on Nirn.

Actually all men are descendant to the Nords if I'm right. People were arriving from Atmora before Ysgramor appeared but the empire didn't appear until Ysgramor returned the second time.
The people who came before Ysgramor decided to live peacefully with the elves. I think that the Bretons are actually due to humans mating with the mer or elves? All of the men were descendants of the first Nords though. Tiber Septim had Nordic blood.

The Bretons, I believe, are the result of the [censored] of human woman by Ayleids.

Edit: The "r" word.

I need an explanation for the difference between Imperial and Nord then.

I understand what Bretons are, though I based my comment on the Colovian/Nibean comment on actual comments made by in game NPC's. The culture/architure and language are/were different. Which lead me to believe it was a similar case as the Nords vs Forsworn.

It's more of a cultural difference than anything else, combined with being in different climates for several hundreds of years. Both races trace their origins back to the Atmorans. The Nords are those that stayed in Skyrim, while the Imperials (called Cyro-Nords before the time of Tiber Septim) emerged out of the Nibenese tribesmen in the Merethic era. The difference between Colovia and Nibean Imperials is that The Nibean Imperials liberated themselves from the Ayleids, while the liberation of Colovia only came after support from Skyrim. Hence, Colovia has more Nordic influences. At least, that's my understanding of it.

The Nords vs. Forsworn is quite different, as the Forsworn are the original inhabitants of The Reach, and have Breton ancestry, rather than Nordic.

Think of Americans and the English. They were the same cultural group but when they separated a new culture was born and the differences are very obvious.

That's what confused me about the Forsworn. To me it seems that it goes Nord > Imperial > Breton in terms chronological appearance.

The Nords settled Skyrim after Arriving from Atmora (supposedly before any other men were in Tamriel.) Then how did Bretons settle it first and why are they so... Tribal. They act like cavemen.

Don't think of the first inhabitants as.....Nords.

Ok here is exactly what happened, roughly ^^.

The continent of Atmora is where men are. The continent of Tamriel is where the elves reside. The men on Atmora are pitched in a civil war, not sure when it started or what it is about. Between the years ME1000 - 800 men start to leave Atmora and settle on Tamriel. They, presumably, land along the northern coasts of Tamriel.

These men live with the elves. They don't try to stake claim on any land they simply assimilate with the elves.

Now I believe that Ysgramor lands on Tamriel around the year ME800, not entirely sure but I heard that number somewhere. (BTW the years of ME are the Merethic era and can be thought of as BC in our time. The years count down so ME1000 was before ME800.)

Ysgramor and his family and presumably others land on Tamriel. They differ from the earlier men who lived peacefully with the elves without staking claim to their own land. Ysgramor claims a bit of land and an all human settlement is constructed, around the location of Winterhold.

This is how the first men arrived on Tamriel. Now to see the separation of culture, ergo the different races of men, you have to look further into history at the split of the cultures. The foresworn would probably be an easy one to figure out. They are a tribal, barbaric group of mostly bretons. They most likely lived in the Reach undisturbed for some time and never advanced in their beliefs. They also became a group that people with nothing to live for would join, seen in the quest where you get to talk to some foresworn members.

The Imperials separated, I believe, when Tiber Spetim began an empire, not the first empire. So those are the 3 races of men; The Nords, the original inhabitants of Tamriel who stayed within the borders of Skyrim keeping to their strong bodies and gruff spirits; The Imperials who separated from their more barbaric descendents to become a more civilized people, living in castles and more modern homes; and The Bretons, who became known as the most powerful human casters of Tamriel, though their ancestors gained this at a price. This is of course excluding the Ra-Gada or Redguards because they are from a different continent all together.

I thought imperials came when from nedes breading with nords since i think alessia and her army were nedes then they built the first cyrodiilic empire and the imperial race formed. Also not all races of men are from nords correct me if i'm wrong but the redguards came from yokuda and settled hammerfell. On a side note i'm still confused about when and where the dragon wars occured

Only the Nords come from Atmora. And even they originally started in Skyrim.

Nedes started in Cyrodiil. Them descending from Nords is Tiber-era propaganda. It's wrong. It's lies so the Nords would like them.

Here's what I conjecture: the dragon war was the war between man (+/ giants) and mer (+/ dragons) soon after the dawn, which resulted in the sundering of the continents and the dislocation of the various races (Yokudans, Summersetters, et cetera)

Sorry for the confusion, no the Redguards are in no relation to the Nords. They are their own race, the Ra-Gada, from Yokuda like you said.

Nedic Peoples is a blanket term for a wide array of indigenous human tribes. Most of the named ones are from Cyrodiil, but they lived in Atmora and Morrowind as well. It would be weird if they weren't in High Rock and Hammerfell too.

None of them ever set foot in Atmora.

The Nords were just one tribe who left Tamriel at some point, and gradually emigrated back, culminating in Ysgramor's voyage of conquest.

Since then, the men of Cyrodiil and Skyrim have been intermixing, such that Colovians are in large part descended from Nords. Nibeneans too, probably, but in they are still closer to the indigenous humans in culture and bloodline.

Talos badly needed the support of Skyrim and styled himself as a Nord. As well as attempting to revive the practice of Thu'um, he stoked the northern ego by supporting false histories that cite Atmora as the source of all humanity but the Redguards. Anyone who has heard of the Kothringi knows of another exception, and the KotN documents named a whole lot more.