Which is easy to learn american english or the british ?

Thanks for your answer. i guess it is American English at the starting of your Answer. actually when i was in school i was taught that American English is not a good way to learn English because UK English is quite a bit more precise to learn.More over american style is a one that is required for one who is searching for dialect.but i don't think you agree with the former. and of course that's the reason which made me ask the question.
thanks in advance.

thanks for your answer. but the thing is that it is easy for the natives of either america or Britain to get familiar with the language where comes to rest of people like me have much of confusion regarding the language for example programme and program both do mean the same but the nativity is different and of course that matters a lot for a learner.