Linked from
The 14 pages that link to American English, each with the reason it gives.
English orthographyCompared with: American spellings such as color differ from many British forms.
Modern EnglishBroader topic: It is a major national variety that developed within Modern English.
Mrs.Related: American usage commonly writes the title with a period.
Serial commaRelated: American publications differ, but many favor the serial comma.
Mr.Related: American writing conventionally spells the title with a period: Mr.