ABSTRACT
Federal political systems are based on political and social theories about federalism, a concept whose origins go back to the ancient world and biblical times. Federal systems have existed in various forms from the loose linking together by treaty of sovereign states for specific military or economic purposes in the Hellenic world. But their popularity increased greatly following final agreement on the United States constitution in 1787, the use of federal ideas as a guide for the Swiss, Canadian and Australian federations, and immediately after the Second World War in various experiments of nation building, particular in Europe, Asia, Africa, the Middle East and the Caribbean.
