Nationalism as a unifying force is a political and social ideology that emphasizes the interests and culture of a particular nation, promoting a sense of collective identity and belonging among its members. This sense of unity often emerges from shared language, history, culture, and traditions, fostering loyalty towards the nation-state. As nationalism gained traction in Europe during the late 19th and early 20th centuries, it played a crucial role in shaping national identities and driving movements for independence and self-determination.