How did the Napoleonic Wars encourage German nationalism in Schleswig-Holstein?

The Napoleonic Wars served as a catalyst for awakening German national sentiment in the region of Schleswig-Holstein.

Following the wars, the long-standing political bonds between the two duchies—which had been united for centuries—led nationalists to argue that they should function as a single, unified state within the German Confederation. This push for unity was driven by the desire to solidify the region's German identity and status, directly opposing efforts by Danish nationalists to incorporate Schleswig into Denmark and separate it from Holstein.

This ideological conflict, rooted in the rise of nationalism, eventually fueled the Schleswig-Holstein question, leading to the uprising of 1848 and the subsequent German-Danish War in 1864, as German nationalists sought to confirm the association between the two duchies and detach them from Danish control.12