A book of Political Science for Three Year Degree (Semester System) Course prepared as per new Semester System of Dibrugarh University for 6th semester written by Dr. Deepan Das, Astt. Prof., Deptt. of Political Science, R.G. Baruah College, Guwahati, Dr. Tanusree Sarker, Associate Professor, Deptt. of Political Science, Tinsukia Women’s College, Tinsukia and Dr. Rakhimoni Gogoi, Astt. Prof. Deptt. of Political Science, Haflong Government College.