The area of the United Kingdom is not large, but if the dialects of English in the British mainland are subdivided, there are more than 300 kinds of statistics. The area of the United States is much larger than that of the British mainland, but in the United States, the dialects of the English dialect are much smaller than the British mainland. American English dialects can be roughly divided into three types: Eastern, Midwestern, and Southern. Eastern dialects are distributed in the northeast region with Boston as the center; Midwestern dialects extend from the central region to the western region, and southern dialects are distributed from Virginia to Southeastern Texas. What does this passage support? ['The dialect distribution of English in the United States is less regular than in the United Kingdom.', 'Even if the country is small, the dialects can be very different under certain conditions.', 'The complexity of dialect differences has nothing to do with the vastness of the country.', 'British English dialects are more divided due to their small size.']