Question

Why do countries that speak the same language have the same dialect?

Answer 1

Dialects of a language may vary in terms of accents, the words people use, the way people structure their speech. This can be because of geographical distance or because of social factors. Often people who speak the same dialect will live in the same place. Sometimes linguists speak of 'lects'.

Answer 2

Due to the way the world was created and it’s been this way for thousands of years so if we wanted to know we would need a time machine