Original: Descended from the spoken Arabic brought to Egypt during the AD seventh-century Muslim conquest, its development was influenced mainly by the indigenous Copto-Egyptian language of pre-Islamic Egypt,Nishio, Tetsuo.
Simplified: Its origin is from the spoken Arabic brought to Egypt during the AD seventh-century Muslim invasion. Masri was formed also of Copto-Egyptian language of pre-Islamic Egypt,Nishio, Tetsuo.