Complex sentence: He has built many Arabic Schools, Islamic Centers and Mosques, and normally he spends huge sums money in Organizing conferences, seminars and symposia on thorny Islamic issues prevailing in the Islamic societies and the country as a whole.
Split into simpler sentences: He has built many Arabic Schools, Islamic Centers and Mosques. He spends huge sums of money organizing conferences, seminars and symposia on thorny Islamic issues prevailing in the Islamic societies and the country as a whole.