The Battle of Grand Gulf was fought on April 29, 1863, during th: Separate from General American English are American dialects with clearly distinct sound systems that have developed over time, including Southern American English, the English of the coastal Northeastern United States—including New York City English and Eastern New England English—and African-American Vernacular English; all of these, aside from certain subdialects of the American South, were historically non-rhotic. Canadian English varieties, except for those of the Atlantic provinces and perhaps Quebec, are generally considered to fall under the General American English continuum, although they often show raising of the vowels /aɪ/ and /aʊ/ before voiceless consonants and have distinct norms for writing and pronunciation as well.[280]