Please do not change articles from American English to British English, or from British English to American English, where the article was originally written in the form of English native to that country. Wikipedia accepts articles in both forms of English. If an article is about either country it is supposed to be written in that country's English.

Also please leave the date format in the form native to that country (dd/mm/yy for British/Australian/Irish etc topics, mm/dd/yy for American topics). If the topic is international, please leave in the form the article was written in originally. Many users become offended if their native English is deleted from articles about their country, and replaced with someone else's form of English or form of dates.