Answer:
A realist theorist would argue that system-level change occurs when the number of great powers in the system changes. Realism is a school of thought in international relations that emphasizes the role of power, particularly the distribution of power among states, in shaping the behavior of states and the dynamics of the international system. Realists believe that changes in the distribution of power, such as the rise or fall of great powers, have a significant impact on international relations and can lead to shifts in the balance of power and changes in the international system.
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