What war was a result of militarism and nationalism in the late nineteenth and early twentieth century?

The First World War, also known as World War I, was significantly influenced by militarism and nationalism in the late nineteenth and early twentieth centuries. The intense arms race among European powers, coupled with aggressive nationalist sentiments, heightened tensions and rivalries, particularly in the Balkans. The assassination of Archduke Franz Ferdinand in 1914 acted as a catalyst, triggering a series of alliances and mobilizations that ultimately led to the outbreak of the war.