Classical languages are those that have a rich and ancient literary tradition that is not an offshoot of another tradition. For that reason most "classical" languages are dead languages.
Yes, American English is considered a dialect of the English language.
Yes, British English is considered a dialect of the English language.
No, English is not considered a Romance language. It belongs to the Germanic language family, which is different from the Romance languages that evolved from Latin.
Yes, "ea" is considered a diphthong in the English language.
Shakespeare's work might not be considered to be classic because one has a peculiar definition of the word "classic". If your definition of "classic" is that it was produced by the ancient Romans and Greeks sometime before 400 AD., then Shakespeare does not fit.
Italian is considered a "Romantic" language, whereas, English is a "Germanic" language.
English is considered a living language because it is still spoken today.
There is no concensus, but in general, English is known as an International language.
English language from India perspective can be considered a link language
Bostons population growth
English is considered a Germanic language, although it claims influences from many places.
English language from india perspective can be considered a link language