Why superpowers do not follow one learning curve

Do rising superpowers need time to learn how to behave in that role?

There is no single pattern: major powers such as Britain, France, the United States, and the Soviet Union behaved differently because their institutions and strategic cultures differed.

The answer rejects the premise that every rising superpower passes through the same institutional learning curve. Britain, France, the United States, and the Soviet Union brought different political systems, strategic cultures, and imperial practices to great-power status. British and French policies toward slavery within their empires show that even superficially similar imperial powers could act differently. Historical comparison therefore needs specific institutions and choices rather than a single rule about how superpowers mature.