The Contemporary International Political System is rooted in ancient and medieval political systems of Europe, Asia and Africa, which brought different political entities together by conquest. This course introduces to the fresh students of politics, those socio-political organizations and institutions of the distant past that have shaped the present or contemporary international system. It engages concepts such as Empire, hegemony and hierarchy to explore the changing nature of order, power and authority that constitute political relations at different points in time. It also examines the forces of change and continuity as they alter the configuration of the international system. The lectures will discuss the concept and nature of international system, emergence of international system as exemplified by the ancient Greek City-States. Italian City-State System, Chinese Empire, Roman-Byzantium Empire, politics of the Medieval System and National System which saw to the demise of the Holy Roman Empire and the effective take-off of the present International System. The discussions will also show the similarities and disparities in the old and new “systems”.