A regional dialect is not a distinct language but a variety of a language spoken in a particular area of a country. Some regional dialects have been given traditional names which mark them out as being significantly different from standard varieties spoken in the same place.
Uncounted numbers. There are regional dialects, cultural dialects, class dialects, international dialects. In fact, every English speaker has his own dialect, called an idiolect.
Northern, Midland, and Southern
Northern, Midland, and Southern
tuscan, umbrian, and spanish
tuscan, umbrian, and spanish
English comes from the UK, and England is in the UK. If you are comparing it to the American-English, American-English is derived from many dialects, and sounds different from the way it began sounding. Just as in the USA each state has regional dialects, such as southern states . Most countries have regional dialects
May not be understood by most speakers of English. A good example is Chinese language -- I understand that there are over 300 dialects and many Chinese cannot understand some regional dialects.
General American
In some regional dialects, that would be "calm bomb."
Inland North
European Russia (and Asian Russia as well) speaks Russian. There are regional dialects, but they're all dialects of Russian and mutually intelligible.
Local color writing tried to faithfully reproduce regional dialects