Why was nationalism particularly significant to Italian unification?

Nationalism was crucial to Italian unification as it fostered a shared sense of identity and purpose among the diverse Italian states. The desire for a unified nation, fueled by cultural and historical commonalities, inspired movements led by figures like Giuseppe Garibaldi and Count Camillo di Cavour. Nationalism helped mobilize popular support and facilitated the political and military efforts needed to consolidate the fragmented states into a single nation by 1871. Ultimately, it transformed the concept of Italy from a geographical region into a unified nation-state.