Nationalism manifests in contemporary political movements as a reaction to globalization and perceived threats to cultural identity. It often emphasizes sovereignty and a strong sense of community based on shared history, language, or traditions. Such movements can lead to the rise of populist leaders who promise to prioritize national interests, often advocating for protectionist policies. While nationalism can foster unity, it may also incite exclusionary practices against minorities or immigrants. Understanding nationalism's roots and expressions is crucial for addressing the challenges it presents within modern political landscapes.