> Their families and friends were already close because few, if any, of them left where they were from (except to get drafted into wars)
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This doesn’t apply to the U.S. or Canada, nor has it ever since their foundings, possibly excepting some natives. The American frontier was declared closed by 1890, long before the post-WW2 population surge to California. Before that, New Englanders left farmland to settle the Midwest. Later came the Great Migration of mostly Black Southerners to northern cities. Anglophone North America has never been a peasant society where families remained rooted for generations.
Your original text, edited for sequence and clarity while preserving your voice:
This doesn’t apply to the U.S. or Canada, nor has it ever since their foundings, possibly excepting some natives. The American frontier was declared closed by 1890, long before the post-WW2 population surge to California. Before that, New Englanders left farmland to settle the Midwest. Later came the Great Migration of mostly Black Southerners to northern cities. Anglophone North America has never been a peasant society where families remained rooted for generations.