The Man of Blood and Iron is a title given to Otto von Bismarck, the Chancellor of Germany from 1871 to 1890. Bismarck was a prominent figure in the unification of Germany and played a key role in shaping the country's political and economic landscape during his tenure.

Reasons for the Title:

1. Unification of Germany: Bismarck is known for his efforts to unify the German states into a single nation. He achieved this through a series of diplomatic maneuvers and military campaigns, including the Franco-Prussian War in 1870.

2. Iron and Blood Speech: Bismarck gave a famous speech in 1862 called the "Iron and Blood Speech," in which he emphasized the importance of military power in achieving political goals. This speech is often cited as evidence of Bismarck's ruthless and pragmatic approach to politics.

3. Military Reforms: Bismarck oversaw significant military reforms during his time as Chancellor, including the establishment of a national army and the introduction of conscription. He believed that a strong military was essential for maintaining Germany's position in Europe.

4. Realpolitik: Bismarck was a proponent of Realpolitik, a political philosophy that prioritizes practical and strategic considerations over moral or ideological principles. This approach led Bismarck to make calculated decisions that sometimes involved the use of force or coercion.

Conclusion:

Overall, Bismarck's reputation as the Man of Blood and Iron reflects his uncompromising approach to politics and his instrumental role in shaping modern Germany. While his methods were sometimes controversial, his legacy as a statesman and diplomat is widely recognized.

Otto von Bismarck (Prince Bismarck), called “man of blood” from his great war policy, and “iron” from his indomitable will. So, option B is correct.