why do we build rectangular houses and not round houses?

Question

I mean houses in Europe and America have 4 corners (or more) whereas in Africa Natives build round houses (also in Asia afaik).
Do they have any advantages or disadvantages? Or is one solution cheaper, …?

In: 50

Answer 1

On top of all other answers, rectangular houses have more internal space for a similar footprint.

That can be a good thing (…more space) or a bad thing (more surface area = more heat escapes), but we came to appreciate the personal space more.