Simplify the following text for a Grade 10 native English-speaking person.
Original: He became Finance Minister in November 1999 and was named by the Pakistan Muslim League for the position of Prime Minister after the resignation of Zafarullah Khan Jamali on June 6 , 2004 .
Simplified: He became Finance Minister in November 1999 . Aziz was chosen by President Musharraf for the position of Prime Minister after the resignation of Zafarullah Khan Jamali on June 6 , 2004 .