Simplify the following text for a Grade 10 native English-speaking person.
Original: Abbas served as the first Prime Minister of the Palestinian Authority from March to October 2003 when he resigned citing lack of support from Israel and the United States as well as `` internal incitement '' against his government .
Simplified: He served as the first Prime Minister of the Palestinian Authority from March to October 2003 . He resigned because of a lack of support from Israel and the United States as well as `` internal incitement '' against his government .