Simplify the following text for a Grade 10 native English-speaking person.
Original: Dr. Angela Dorothea Merkel ( born Angela Dorothea Kasner on 17 July 1954 , Hamburg ) is a German politician , and has been Chancellor of Germany since 22 November 2005 .
Simplified: Angela Dorothea Merkel , ( ; nÃ e Kasner , born 17 July 1954 ) is the current Chancellor of Germany .