Final answer:
Both Otto von Bismarck and Giuseppe Garibaldi were instrumental in their efforts to unify Germany and Italy, respectively. Bismarck utilized Prussia's military strength and diplomacy for German unification, while Garibaldi led military victories and supported the monarchy for Italian unification.
Step-by-step explanation:
One goal of both Otto von Bismarck of Germany and Giuseppe Garibaldi of Italy was to achieve the unification of their respective nations. Bismarck's focus was on strengthening Prussia and expanding its influence, which through a series of wars and diplomatic strategies, ultimately led to the unification of Germany. Similarly, Garibaldi's contribution to Italian unification involved leading successful military campaigns and rallying support for a unified Italy under a monarchical government, eventually leading to the declaration of Victor Emmanuel II as the king of a unified Italy.