Simplify the following text for a Grade 8 native English-speaking person.
Original: Aruba seceded in 1986 as a separate country within the Kingdom of the Netherlands , and the rest of the Netherlands Antilles was dissolved on 10 October 2010 , resulting in two new constituent countries , CuraÃ ao and Sint Maarten , with the other islands joining the Netherlands as `` special municipalities '' , officially public bodies .
Simplified: Aruba has left the Netherlands Antilles in 1986 . After CuraÃ ao and Sint Maarten left the Netherlands Antilles too on 10 October 2010 and since then , the country does not exist anymore .