How did nationalism unify some peoples into nation-states while dividing multi-ethnic empires?
Explain nationalism and its effects: how it unified Germany and Italy into nation-states and how it strained multi-ethnic empires, fuelling competition and conflict (Framework Key Idea 10.5).
A Framework-level answer on nationalism for the NY Global History and Geography II Regents: what nationalism is, how it unified Germany (Bismarck) and Italy, and how it both unified and divided multi-ethnic empires such as Austria-Hungary and the Ottomans, with worked exam questions.
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What this topic is asking
Framework Key Idea 10.5 covers nationalism, one of the most powerful forces of the modern age. It asks you to explain how nationalism unified scattered peoples into nation-states (Germany and Italy) and how it strained and divided multi-ethnic empires, intensifying competition and conflict, which leads directly to World War I. Nationalism connects to the enduring issues of power, conflict, and the impact of ideas.
What nationalism is
Nationalism grew from the ideas of the French Revolution (popular sovereignty, the nation as the source of authority) and spread across Europe and beyond. It could be a unifying force, bringing a divided people together, or a dividing force, encouraging national groups within an empire to break away.
Unification: Germany and Italy
Division: the multi-ethnic empires
Nationalism worked the opposite way inside multi-ethnic empires.
The Austro-Hungarian Empire, the Ottoman Empire, and the Russian Empire each ruled many different national groups, with different languages, religions, and identities. As nationalism spread, each group increasingly wanted its own nation-state, so nationalism pulled these empires apart, encouraging rebellion and demands for independence. The Balkans (in southeastern Europe), where many small national groups sought freedom from Ottoman and Austro-Hungarian rule, became known as the "powder keg of Europe" because nationalist tensions there were so explosive. This is exactly where World War I would be sparked.
Why nationalism mattered so much
Nationalism reshaped the map of Europe, created powerful new states (especially Germany), intensified rivalry and competition among nations, and stirred ethnic conflict within empires. Combined with militarism, alliances, and imperialism, this nationalist competition set the stage for World War I. The same idea later drove anti-colonial movements in Africa and Asia.
Try this
Q1. Name the Prussian chancellor who united Germany through a policy of "blood and iron". [Recall]
- Cue. Otto von Bismarck.
Q2. Explain how nationalism could threaten a multi-ethnic empire. [Short explanation]
- Cue. A multi-ethnic empire ruled many national groups; nationalism made each group want its own independent nation-state, so it pulled the empire apart through demands for independence and rebellion.
Exam-style practice questions
Practice questions written in the style of NYSED exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Regents GHG II (stimulus, 2023)1 marksThe unification of Germany in 1871 and of Italy in the 1860s and 1870s is best explained by the rise of (1) imperialism in Africa; (2) nationalism; (3) the Enlightenment; (4) the slave trade.Show worked answer →
A stimulus-based multiple-choice item assessing causation (Practice B).
The correct answer is (2). Nationalism, the loyalty to a shared nation, drove scattered German states and divided Italian states to unite into single nation-states.
Why the others are wrong: (1) imperialism is overseas empire-building; (3) the Enlightenment came earlier and is about reason and rights; (4) the slave trade is unrelated to German and Italian unification.
Markers reward identifying nationalism as the force that united Germany and Italy.
Regents GHG II (CRQ, 2024)2 marksDocument 1 describes the many languages and nationalities ruled by the Austro-Hungarian Empire. Based on this document and your knowledge of social studies, explain how nationalism could be a threat to a multi-ethnic empire.Show worked answer →
A 2-point CRQ explain question (Practices B and C).
A complete answer explains the threat: a multi-ethnic empire like Austria-Hungary or the Ottoman Empire ruled many different national groups, each with its own language and identity. Nationalism encouraged each group to want its own independent nation-state, so it pulled the empire apart as groups demanded independence or autonomy, fuelling rebellion and weakening the empire.
Markers reward connecting nationalism (each group wanting its own nation) to the breakup or instability of a multi-ethnic empire.
Related dot points
- Explain the causes of World War I: militarism, alliances, imperialism, and nationalism (the long-term causes) and the assassination of Archduke Franz Ferdinand (the spark) (Framework Key Idea 10.6).
A Framework-level answer on the causes of World War I for the NY Global History and Geography II Regents: the long-term causes of militarism, alliances, imperialism, and nationalism, and the immediate spark of the assassination at Sarajevo, with worked exam questions.
- Explain the causes, key ideas, and consequences of the American and French Revolutions: how Enlightenment ideas, grievances, and demands for rights produced revolution, and the political and social changes that followed (Framework Key Idea 10.2).
A Framework-level answer on the American and French Revolutions for the NY Global History and Geography II Regents: Enlightenment causes, the Declaration of Independence and the Declaration of the Rights of Man, the radical phase and Napoleon, and lasting consequences, with worked exam questions.
- Apply chronological reasoning and causation (Social Studies Practice B): distinguish long-term and immediate causes from effects, identify and explain turning points, and analyze continuity and change over time.
An exam-skills answer for the NY Global History and Geography II Regents: how to reason about cause and effect (long-term versus immediate causes), how to identify and explain a turning point, and how to analyze continuity and change over time, with worked exam questions.
- Explain how World War I was fought (total war, new technology, trench warfare) and its consequences: massive casualties, the fall of empires, the Treaty of Versailles, and the conditions that led to future conflict (Framework Key Idea 10.6).
A Framework-level answer on how World War I was fought and its consequences for the NY Global History and Geography II Regents: total war and new technology, trench warfare, the collapse of empires, and the Treaty of Versailles, with worked exam questions.
- Explain the causes and methods of nineteenth-century imperialism: how industrialized nations sought raw materials, markets, strategic advantage, and prestige, and how they divided and ruled Africa and Asia (Framework Key Idea 10.4).
A Framework-level answer on nineteenth-century imperialism for the NY Global History and Geography II Regents: the economic, strategic, and ideological causes, the Scramble for Africa and the Berlin Conference, rule in India and China, and the justifications used, with worked exam questions.
Sources & how we know this
- New York State K-12 Social Studies Framework (Grades 9 to 12) — New York State Education Department (2016)
- Global History and Geography II Framework — New York State Education Department (2025)