What was nationalism force?

Nationalism is a political ideology that emphasizes the interests, culture, and identity of a particular nation or group of people, often prioritizing national unity and independence. It can serve as a unifying force, fostering a sense of belonging and pride among citizens while motivating movements for self-determination and independence from colonial or imperial rule. However, nationalism can also lead to exclusionary or aggressive policies against perceived outsiders, sometimes resulting in conflict and tension between different national or ethnic groups. Overall, nationalism has played a significant role in shaping modern political landscapes and historical events.