Was it an obstacle that prevented the unification of Italian states because the common people did not support unification?

Yes, the lack of support among the common people was indeed an obstacle to the unification of Italian states. The common people were often loyal to their local rulers or regions, and did not see the benefit of joining together to form a unified Italian state. This lack of popular support made it difficult for leaders like Giuseppe Garibaldi and Count Camillo di Cavour to gain the necessary momentum and support for unification efforts. Additionally, the presence of foreign powers such as Austria and France in Italy also posed challenges to the unification process.