i forgot to ask one more thing..what is a regional dialect?i can't find anything about that
A regional dialect is the use of certain words and accents peculiar to a given region. Y'all, for instance, marks a southern U.S. speaker. The pronunciation of some words such as the small stream, creek, crick vary between urban and rural speakers. When I was growing up in Chicago many years ago, a gangway was the narrow space between houses, and a prairie was a vacant lot. Check these sites for more information.
http://www.uncp.edu/home/canada/work/alleng/dialect/dialect.htm
http://www.uwm.edu/Course/350-192/region.html
http://www.pbs.org/speak/seatosea/americanvarieties/map/map.html