Because Americans programmed the computers. The british programmers didn't mind copy-and-pasting the program for british computers.
Yes, all vocaloid programs are compatible with English Computers.
"American" computers, like almost all other computers in the world, have two main standards for connecting a hard drive. Older computers primarily used a standard referred to as ATA, PATA, or IDE. Newer computers use a SATA interface. If your drive is one of these two standards, you can use it in an "American" computer.
Some examples include: color (American English) and colour (British English) traveler (American English) and traveller (British English) realize (American English) and realise (British English)
I think an average american person can own two computers.
Computers in the 40's were used to perform calculations for the military of the country that developed it. The Z3 in Germany was the first such computer, with the American Harvard-IBM MARK I and ENIAC, along with the English Colossus coming soon after that.
All of the Harry Potters are English films.
Probably because all English speakers read and contribute to the English Wikipedia.
They are all 360 degrees
The spelling is "garden" in all forms of English.
The English ( despite all their faults ) never "killed off entire American people." - The Americans did that to the American Indian nations.
American English is influential globally due to the economic, political, and cultural dominance of the United States. The country's popular culture, technology, and media have all played a role in spreading American English worldwide. Additionally, the widespread use of English as a global lingua franca has further solidified the influence of American English.
No one is in charge of English. Languages change through time and English has. Words dealing with computers are fairly new to the English language. New words are developed all the time that end up in common use.