a new generation would move west and settle

when it became possible to separate geographically and economically, the familial bonds that were previously necessitated broke apart

people had to live closer together

they needed each other

and it was harder to move

and less reason to move because less free economy and less opportunity

and harder transportation

they didn't live together

hmm

your link doesn't show that they lived in the same house

in fact, it shows they did not

if you read it

what research is this even based on

People in the colonial territories were faced with mass hostility from foreign peoples at every turn in the form of the natives and also suffered severe resource and labour scarcities which most likely would have emphasised the importance of the extended family unit, rather than diminished it

@Nerthulas

the point is, what do you think changed?

clearly the material circumstances

you're not understanding what I'm saying

do you think they became genetically less family oriented?

you wouldn't move with your father to the west

what are you trying to say?

absolute nuclear family never was a thing historically

Yes I am, I just think you overestimate the frequency of it's happening

you would go with your wife, and children if you had them

peopel all work on a farm

Family units migrated together generally, not in parts

and live together

no, old people were not moving west

family unit yes

"evolutionary behavior" is not at all clear

but how large of a family unit

The average life span wasn't that high even lol

one brother stayed in the original territory

Usually was not the case

life span stats are misleading, they include a lot of infant and childhood mortality

especially when you drastically cahnged the environment, then "evolutionary behavior" doesn't help much to predict what happens

well you mean amalgamation of families basicaly handrubbing,yeah for sure

we need a Chinese/Japanese clan system

if you made it to 22 you would be likely to live quite a long time

My entire family spent the last thousand years of their history living on just three islands

what may have evolved will no longer be beneficial in a drastically different environment