Complex sentence: He is known to be a crucial part of Egypt in being a leader of the Arab world and the Muslim defiance of Western Imperialism and attempted to reform Egypt and other Muslim countries by introducing parts of Western science and philosophy.
Split into simpler sentences: He is known to be a crucial part of Egypt in being a leader of the Arab world and the Muslim defiance of Western Imperialism. He attempted to reform Egypt and other Muslim countries by introducing parts of Western science and philosophy.