Final answer:
Bismarck would likely have approved more of Norman Rich's interpretation, which highlights his use of Realpolitik and pragmatic strategies rather than nationalistic or ideological motivations.
Step-by-step explanation:
If Otto von Bismarck had the opportunity to read interpretations by different historians, it is likely that he would have been more pleased with the interpretation by Norman Rich.
Rich's assessment aligns with Bismarck's methods and goals, emphasizing Realpolitik and the strategic use of war for unifying Germany while avoiding unnecessary conquests. This interpretation suggests Bismarck had a pragmatic approach that avoided the pursuit of glory for sensible political power gains, particularly pointing to his decision not to occupy Vienna after defeating Austria. It reflects Bismarck's priorities in maintaining Prussia's power and his skill in manipulating nationalist sentiments without seeking a grand national spirit for unification.
Conversely, historians who might emphasize Bismarck's nationalist goals or ideological drives would likely receive less favor from Bismarck, given his pragmatic and power-centric strategy in forming the German Empire.