The whole world, preety much
English was "created"--natural languages evolve, they aren't created. Something like Klingon is a created language, English is a natural language--by people living on the British Isles approximately where England is now.
EC English Language Schools was created in 1991.
A Dictionary of the English Language was created on 1755-04-15.
The Imperial Dictionary of the English Language was created in 1847.
Rotorua English Language Academy was created in 1993.
The American Heritage Dictionary of the English Language was created in 1969.
The Cambridge Grammar of the English Language was created on 2002-04-15.
Governor General's Award for English-language drama was created in 1981.
World English-Language Scrabble Players' Association was created in 2003.
Al Azhar English Language Resource Center was created in 2007.
Governor General's Award for English-language poetry was created in 1981.
Zero Punctuation was created on 2007-07-24.