Simplify the following text for a Grade 6 native English-speaking person.
Original: American English ( variously abbreviated AmE , AE , AmEng , USEng , en-US , also known as United States English , or U.S. English ) is a set of dialects of the English language used mostly in the United States . Approximately two-thirds of native speakers of English live in the United States .
Simplified: American English or U.S. English is the dialect of English language spoken in the United States .