I agree with the last post, what is American English? After the war of Independence in (gods) country. The people that were in power got together to decided on a common language, They decided their common native language would be German. On the 11th hour of the vote being passed, those great men of power changed their minds and made English their native tongue for reasons unbeknown to the other less important nations. And so it came to pass, America's native tongue would be English.
Since then, as America has become the greatest, most powerful, most beautiful, mainly the most everything you can possibly think of country on the planet. Everything they have copied from other countries, they automatically changed, re-named or claimed as their own. Hence American English.
To be honest, just because they have changed a few words and added a few of their own and spelt some differently to us does not make it American English. It would be like the Scottish talking Scottish English. Liverpudlians talking Liverpudlian English. Geordie's talking Geordie English and so on and so on. The English language comes from England and if a country such as America uses it, it is and always will be English. Can you imagine telling Thais you speak English Thai, not Thai?
Mr. Russell Park