Simplify the following text for a Grade 8 native English-speaking person.
Original: Since October 2007 , Valdivia has been the capital of the newly created Los RÃ os Region and is also the capital of Valdivia Province .
Simplified: Valdivia is the capital of Los RÃ os Region ( Spanish for Region of the Rivers ) one of Chile 's 16 regions . Valdivia is most known for being the most affected city by the Great Chilean Earthquake .