Why do Americans pronounce words differently?

[alabama]

Because we live in another Country that was raised differently.

Diversity!

[Genuine]

It's called an accent. Everybody has their own one.

[Fire]

It's called an accent. Everybody has their own one.

Actually, it's a dialect. It's the same language, but with a few added/replaced words. This is similar as to why Spanish in Spain has a few different words then say, Spanish in Mexico. For example, Spain is the only Spanish speaking country that uses the form "vosotros" which mean "you all."

To clear this up, an accent is a different pronunciation of a word, not an entirely new word.

[milopeach]

I do think that the way they put z's instead of s's in words such as 'realised' is annoying, You're not emphasising (that's another) the s in any way.

[WTC]

Even americans have diffrent accents.
For example some states have their own accent.
Like texas and new york people talk nothing alike.
Atlanta and california people talk nothing alike...and so on.
As well found this cool video of a female who does various accents.

Spoiler (Click to View)

[yt]http://www.youtube.com/watch?v=3UgpfSp2t6k[/yt]

[New Jersey]

It's because we are 100% american and have different slang.

[SuhinderG]

It's kind of like how there's many different types of spanish.

Mexican Spanish
Spain Spanish

Etc..

[n00bikscube]

American English is more Germanic and colonists in America come from more than just England but took English as their language.

[Daniel Faraday]

Britannia - Held by Rome for hundreds of years and then eventually overran by Germanic tribes. Modern English would be derived from their language, as would their future culture. Not much integration between different societies.
United States- Held by Britain for around 200 years, formed from their citizens, but eventually penetrated by a great variety of cultures and languages.

[Gerira]

Languages evolve over time, some words get old and replaced by new ones, other never get replaced. It's how people using it interpreted it. It's the same thing in my country. In Croatia, we speak Croatian, in Serbia they speak Serbian. They're very similar, and it's the way languages evolved during the past. Also, English and American English got influenced by the local inhabitants, neighboring countries, political situations etc.