What were the similarities in the idea of unification between otto von bismarck and sardar vallabhbhai patel?

Both Otto Von Bismarck and Sardar Vallabhbhai Patel were instrumental in unifying their respective nations (Germany and India) by skillfully integrating diverse states and regions under a centralized government. They both used diplomacy, negotiation, and strategic alliances to achieve national unity and create strong, centralized states. Additionally, both leaders faced opposition and challenges in their efforts to unify their nations but ultimately succeeded in creating a more cohesive and powerful entity.