Although just to add, as someone has stated, there are a few differences in grammar, but these are very minor.

Hi, there is not much difference between the two except for spelling variances. For example, whilst the British spelling of many words uses 's', American English will use 'z' instead. Examples: Realise (British) vs. Realize (American); Industrialise (British) vs. Industrialize (American). There are other variances, e.g. feces and faeces. As for accent/pronunciation, that is not a language difference but rather a dialect or accent difference due to different regions of course. However with the two different languages, they are both the same in terms of grammar and vocabulary. If you have any other questions you may contact me.

Stephanie, YOU ARE COMPLETELY RIGHT BUT ONE THING MORE. British is real English and Brattainya. American English is made from different languages. France, German Latin...