im from china, i noticed that almost every american -- im referring local americans, not those new immigrants from all over the world --- speaks english the same, unlike countries in china, i mean, yes, we do have a standard of pronunciation of our mother tongue but people's accents from different regions differ a lot and even of the vocabulary and grammer, like the difference between cantonese and mandarin, they are almost two languages but both written in chinese characters. so maybe there are tiny differences in the states, but how? i'd like to know about them
thank you
更新1:
sorry, not countries in china, in china it is, a typo