This document discusses the concept of nationalism. It begins by defining nationalism as a sense of patriotism and sacrifice for one's country. Nationalism also contributed to the breakup of large empires in the early 20th century. Nationalism emerged as a compelling political ideology that shaped history and inspired both loyalty and hatred. In the 19th century, it led to the unification of smaller states into larger nation-states like Germany and Italy. The document then discusses the concepts of nation and nationalism. A nation is an "imagined community" that is defined by shared beliefs, history, territory, political ideas, and common identity among its members. Finally, the document discusses national self-determination and the challenges of balancing nationalism