if the united states and england were to cut off all communication their dialects would likely become nonexistent increacingly diffrent divided into more subdialects part of diffrent launge families easiser to understand by non-native speakers

If the United States and England were to cut off all communication, their dialects would likely not become nonexistent. Instead, they would probably continue to evolve independently, leading to increasingly different variations and potentially giving rise to more subdialects within each country. However, without communication between the two regions, it is possible that the dialects would diverge to the point where they could be considered part of different language families.

Since dialects develop through linguistic and cultural interaction, a lack of communication would hinder the cross-pollination responsible for dialectal changes. As a result, the dialects within each country might experience slower evolution. However, it is unlikely that they would disappear altogether.

Regarding comprehensibility to non-native speakers, the increased divergence between the dialects may make them more challenging to understand. Non-native speakers might struggle with the unique vocabulary, pronunciation, grammar, and idiomatic expressions present in each dialect. Therefore, the lack of communication between the US and England could potentially make their dialects somewhat less accessible to non-native speakers.