Simplify the following text for a Grade 9 native English-speaking person.
Original: The AlÃ 3\/4 ingi , Anglicised variously as Althing or Althingi , is the national parliamentâ '' literally , '' ( the ) all-thing '' ( = general assembly ) â '' of Iceland .
Simplified: The Althing ( Icelandic AlÃ 3\/4 ingi ; Old Norse AlÃ 3\/4 ing ) is the national legislature of Iceland .