They're right I'm gonna cp what they said though.
Answer:
The London dialect is the basis of modem English
Explanation:
The written form of modern English is based on the London dialect, which greatly influenced written forms when modern English was established. However, the pronunciation of words within modern English has changed a lot over the years, moving further away from the London dialect, mainly by adding new words and words mixed with foreign languages.
This proves how the language is a living system in constant evolution and modification, following the advance of humanity.