Simplify the following text for a Grade 10 native English-speaking person.
Original: Selangor ( also known by its Arabic honorific , Darul Ehsan , or `` Abode of Sincerity '' ) is one of the 13 states of Malaysia .
Simplified: Selangor ( also known as Selangor Darul Ehsan or Selangor the Abode of Sincerity ) is one of the 13 states that form Malaysia .