Weather is mild and stable

Is that a fact, or an assumption?

Fact

The weather in North Africa is such that you will die without shelter

But the shelters are less complex

And in part due to environment, people don't live very long in Africa or the middle east

They used to be more advanced

Compared to say one that would survive in England or so

Like a mud hut wont work in england

At least not as well as wooden shelters

Mud hut doesn't really work in Africa

Then brick

I was thinking middle east for that

But it stands that the shit grass huts work in Africa

Not really. It's still hot as hell

They dont need solid structures as much

Also, the climate in the Far East is exactly the same as the east of the Mississippi.

Yet the indigenous people look VERY different

Evolutionary divergence

And one of them has been noticeably more advanced than the other for all recorded history pre-colonization

Eastern Europe and Russia shares the same climate as northern Canada as well

Again they evolved from separate human line

Northeast China, North Korea, North Japan, New England all have the same climate

There is also the part where the more advanced civilizations had more conflict where they were.

Really? Native Americans had constant warfare

And to a degree were see faring

But they had huge open land

It wasnt as bad as say romans vs persians or vikings versus english

Who had huge open land?

Where the hell do you live, Arizona?

Indians

I do live in Arizona lol

But I meant relative population density

There was no 100k person wars for the American indians to my knowledge

It was intense skirmishes with high mortality rates.

So communities were small and stayed small

Leading to less diverse thinking than in Eurasia

But with the exact same climate, they would need the same shelter

And physically would adapt to the climate and look roughly the same

However I've been in the traditional homes of both cultures. There's a radical difference between a wooden house and basically a carport made of straw.

But less competition and separate breeding lines