Complex sentence: After graduating from St. George's School in Jerusalem, Nashashibi entered the American University in Cairo but had to leave because he was deported for organizing and marching against the British occupation of Egypt.
Split into simpler sentences: After graduating from St. George's School in Jerusalem, Nashashibi entered the American University in Cairo. His studies ended abruptly when he was deported for organizing and marching against the British occupation of Egypt.