There is only one standard English and it is the same throughout the. USA. The problem with most of the responses is a cultural one, and it has to do with the word "accent".
English speakers use the word "accent" to mean minor vowel changes. When an Arabic speaker uses tge word "accent" they refer to major changes in usage, grammar, and vocabulary. They use "accent" where an English speaker would use "dialect" or "patois".
Hollywood movies often do not use standard English and this is a major source of confusion. Movies are often in dialects of English spoken only by characters in movies. This is not the language of most of the actors.
Shawn, you could not be more wrong about the south calling soda "pop". We hate it. We do however often refer to all sodas as coke. For example "do you want a coke?" "sure, could you grab me a Dr. Pepper". I always associate "soda pop" with Minnesota to be honest. West Virginia is, well, West Virginia, so "down the holler" also isn't used in the south (or not in Texas at least).
阿利, the US uses both "trash" and "garbage", but you're right, we don't use the word "rubbish".
Yes, English is spoken the same around American. I am from the South part of American in Tennessee. People would say that I have country accent by the way I speak fast and sort of slur my words. I've seen many people who study the English language as a second language have more cleaner spoken English than most southern spoken people. North accents have the clear tone of voice I'm telling you about. Once you chat with a few indivduals from the USA, you will see that people from the North, West, South, and East America all structure their worda differently as well.
Yes it is basically the same. There are just a few vocabulary differences. For example, where I live many people in the rural areas of my state call a mango a "green pepper." I have no idea why. However, it is mostly like older country people. There are also many accent variation throughout the United States such as accents from the south, accents from Chicago, accents from New York, etc.