---
title: "Danish War (1864) — AP Euro Definition & Exam Guide"
description: "The Danish War (1864) was Bismarck's first war of German unification, where Prussia and Austria seized Schleswig-Holstein from Denmark. Key for AP Euro Unit 7."
canonical: "https://fiveable.me/ap-euro/key-terms/danish-war-1864"
type: "key-term"
subject: "AP European History"
---

# Danish War (1864) — AP Euro Definition & Exam Guide

## Definition

The Danish War, also known as the Second Schleswig War, was a conflict between Denmark and the combined forces of Prussia and Austria, occurring from 1864 to 1865. This war played a pivotal role in the context of national unification in Germany and heightened diplomatic tensions in Europe, as it set the stage for future conflicts and the eventual unification of Germany under Prussian leadership.

## Related Study Guides

- [7.3 National Unification and Diplomatic Tensions](/ap-euro/unit-7/national-unification-diplomatic-tensions/study-guide/2F0VoSDx98Wa3iRk8sth)

## Review

### Related Terms

- Schleswig-Holstein: A region in northern Germany that was the center of conflict during the Danish War, as both Denmark and the German states sought control over these territories.
- [Otto von Bismarck](/ap-euro/key-terms/otto-von-bismarck): The Prussian statesman who played a crucial role in orchestrating the Danish War, using it as a stepping stone to unify Germany under Prussian dominance.
- Treaty of Vienna (1864): The agreement that concluded the Danish War, leading to the transfer of Schleswig and Holstein to Prussia and Austria, further influencing the balance of power in Europe.

### Key Facts

- The Danish War resulted from Denmark's attempt to incorporate Schleswig and Holstein into its territory, which was opposed by German nationalists who wanted these provinces to be part of a greater German nation.
- Prussia's victory in the Danish War solidified its position as a leading power among the German states and set a precedent for future conflicts, including the Austro-Prussian War.
- The war marked a significant shift in European alliances, as Austria and Prussia cooperated against Denmark, but this partnership would soon dissolve into rivalry.
- The aftermath of the Danish War saw increased nationalist sentiments among Germans, which played a critical role in the push for unification in subsequent years.
- Following the war, Bismarck skillfully used diplomacy to isolate Austria, leading to tensions that culminated in the Austro-Prussian War just a few years later.

### How did the outcomes of the Danish War influence German nationalism and aspirations for unification?

The outcomes of the Danish War fueled German nationalism by highlighting the desire among various German states to unite against foreign control. The defeat of Denmark and the acquisition of Schleswig and Holstein showcased Prussia's military strength and its role as a protector of German interests. This increased nationalist sentiment among Germans motivated further calls for unification, setting the stage for future conflicts that would culminate in the establishment of a unified German Empire.

### Analyze Bismarck's strategy in leveraging the Danish War to achieve his goals for German unification.

Bismarck's strategy involved using the Danish War as a means to strengthen Prussia's influence over other German states while simultaneously undermining Austria's position. By allying with Austria against Denmark, he demonstrated Prussia's military capabilities and gained support from nationalist factions. However, after securing victory, Bismarck tactically shifted focus toward isolating Austria, leading to further conflict that would ultimately facilitate the unification of Germany under Prussian leadership.

### Evaluate the significance of the Treaty of Vienna in reshaping European diplomatic relations after the Danish War.

The Treaty of Vienna significantly reshaped European diplomatic relations by formally recognizing Prussia and Austria's control over Schleswig and Holstein. This agreement altered the balance of power within Germany, enhancing Prussia's status while sowing seeds of future conflict between Prussia and Austria. The treaty also reflected changing alliances and tensions in Europe, setting a precedent for future diplomatic maneuvering that would lead to further wars and ultimately contribute to German unification through Bismarck's adept political strategies.