Causation in 19th-Century Perspectives and Political Developments

By the end of this lesson, students will be able to:

• Account for the influence of nationalist and imperialist movements on European and global stability between 1815 and 1914 (Skill 1.B; LO K).
• Account for KC-3.4: how post-1815 conservative European powers attempted to suppress revolutionary and nationalist currents while reformers and revolutionaries pushed back, and how the system eventually broke down (KC-3.4.II) into the Italian and German wars of unification that reshaped the European balance of power (KC-3.4.III).
• Account for KC-3.5 and KC-3.5.II: how the new imperialism and the second industrial revolution combined to produce European control of global empires and rising tensions among the great powers.
• Account for KC-3.6 and KC-3.6.II: how nineteenth-century European cultural production registered an ongoing tension between objectivity and scientific realism on one hand and subjectivity and individual expression on the other, with the post-1848 Realist and materialist turn marking the central inflection.
• Construct an explicit causation argument across Unit 7's principal developments (Skill 1.B): the nationalist-political transformation; the late-century scientific-intellectual revolution; the new imperialism and its global consequences; and the cultural production that registered all of the above.

Topic 7.9 closes Unit 7 by asking students to construct the explicit causation argument that runs through the unit. Unit 7's central claim is that the post-1815 nationalist transformation of Topics 7.2 and 7.3 produced the Italian and German unifications and the late-century European balance-of-power system; the late-century intellectual revolution of Topic 7.4 reshaped European cultural and political life; the modernization processes of Topic 7.5 produced the foundations of mass society; the new imperialism of Topics 7.6 and 7.7 reshaped European diplomacy and produced the conditions for the late-nineteenth-century non-European nationalist and modernization movements; and the artistic production of Topic 7.8 registered the cumulative cultural-intellectual transformation. The synthesis lesson reviews the principal causal chain, identifies the main contingencies, and prepares students for the causation-process AP exam questions that the unit anchors.

Step 1: The nationalist transformation. KC-3.4 captures the starting point: after 1815, conservative European powers attempted to suppress revolutionary and nationalist currents while reformers and revolutionaries pushed back against the status quo. The post-Napoleonic Vienna settlement of 1815 created a conservative diplomatic order under Metternich's leadership; the Concert of Europe coordinated the great powers' response to revolutionary and nationalist movements through the 1820s and 1830s; the 1830 revolutions in France, Belgium, and Poland tested but did not break the system; the 1848 revolutions across Europe tested it more severely. KC-3.4.II: the breakdown of the Concert of Europe opened the way for movements of national unification in Italy and Germany and for liberal reforms elsewhere. KC-3.4.III: the unification of Italy (1859-1870) and Germany (1864-1871) reshaped the European balance of power and produced efforts to construct a new diplomatic order. The post-1871 Bismarckian alliance system attempted to manage the new central-European reality; the post-1890 antagonistic alignment of the Triple Alliance and the Triple Entente registered the system's eventual destabilization.

Step 2: The intellectual revolution. KC-3.6 captures the cultural-intellectual transformation: European ideas and culture expressed an ongoing tension between objectivity and scientific realism on one hand and subjectivity and individual expression on the other. KC-3.6.II: after the revolutions of 1848, Europe turned toward a realist and materialist worldview. The mid-century shift was driven by several developments. Charles Darwin's On the Origin of Species (1859) and The Descent of Man (1871) produced the central biological-scientific revolution of the period and supplied the intellectual material for late-century Social Darwinist political and racial thought (covered in Topic 7.4). Auguste Comte's positivism (developed across the 1830s and 1840s) shaped late-nineteenth-century European social thought. The mid-century Realist artistic and literary turn (Courbet, Millet, Dickens, Flaubert, Tolstoy; covered in Topic 7.8) gave the materialist worldview cultural form. Late-century Modernism (Impressionism, Post-Impressionism, Cubism; covered in Topic 7.8) extended the cultural transformation toward the subjective, abstract, and expressive. Sigmund Freud's late-century work introduced the psychoanalytic vocabulary that would shape twentieth-century European cultural thought.

Step 3: Modernity and mass society. The late-century European modernization process (covered in Topic 7.5) extended the industrial-economic transformation of Unit 6 into the foundations of twentieth-century mass society. Mass-circulation newspapers and the new visual mass culture (cheap reproductions, photography, early cinema from 1895); mass-circulation political parties and trade unions (covered in Unit 6); mass commercial leisure (the late-century rise of organized sport, urban entertainment, and mass tourism); mass higher education (the late-century expansion of universities); mass scientific research (the late-century professionalization of European science). The cumulative effect was a European society organized very differently from the agricultural and aristocratic Europe of 1815: urban, industrial, mass-mediated, scientifically informed, increasingly democratic, and increasingly committed to the ideology of progress that Topic 7.5 examines.

Step 4: The new imperialism. KC-3.5 captures the imperial transformation: a variety of motives and methods drove the intensification of European global control and produced rising tensions among the great powers. KC-3.5.II: industrial and technological developments — including the second industrial revolution — enabled European control of global empires. The principal motives included economic factors (markets, raw materials, investment outlets), political factors (great-power competition, national prestige), and ideological factors (Social Darwinist racial doctrine, missionary commitments, civilizing-mission claims; covered in Topic 7.6). The principal enabling technologies included the railway, the steamship, the breech-loading rifle, the machine gun, and tropical medicine (quinine prophylaxis against malaria). The principal regional outcomes included the European partition of Africa (regulated through the 1884-1885 Berlin Conference and largely complete by 1900); the further extension of European control across South and Southeast Asia (British India, French Indochina, Dutch East Indies); the late-century intensification of European pressure on China (the Opium War legacy, the late-century concession system, the 1900 Boxer Protocol); and the emergence of Japan as the principal non-European modernizing power.

Step 5: Imperialism's global effects. The new imperialism produced two principal effects on European and global stability. First, on European diplomacy: imperialism produced rising diplomatic tensions among European states that strained the alliance systems (KC-3.5.III.A; covered in Topic 7.7). The Berlin Conference, the Fashoda Incident of 1898, the Moroccan Crises of 1905 and 1911, and the Anglo-German naval arms race all sat alongside the post-1871 European balance-of-power system and pulled it toward the alliance commitments and crisis-management failures that produced the First World War in summer 1914. Second, on the colonized world: as non-Europeans became educated in Western values, they challenged European imperialism through nationalist movements and through the modernization of local economies and societies (KC-3.5.III.C; covered in Topic 7.7). The Indian National Congress (1885), Egyptian nationalism (the Urabi Revolt 1879-1882; the early-twentieth-century Wafd Party), the Boxer Rebellion (1899-1901) and the Xinhai Revolution (1911), and the Meiji Restoration (1868) and subsequent Japanese state-modernization were the principal late-nineteenth-century non-European responses. The cultural-intellectual effects on Europe (KC-3.5.III.B) included the absorption of African artistic motifs into early-twentieth-century European Modernism (Picasso's Demoiselles 1907) and the late-Victorian and early-twentieth-century anti-imperial intellectual tradition (Conrad's Heart of Darkness 1899; Hobson's Imperialism 1902; Lenin's Imperialism 1917).

Causal qualifications. Unit 7's causation argument is not strictly determinist. Each of the five steps had its own contingencies. Bismarck's particular diplomatic management of the German question (the controlled wars against Denmark 1864, Austria 1866, and France 1870-1871) shaped the precise form of German unification. The mid-century scientific revolution drew on intellectual sources (Darwin's reading of Malthus and Lyell; Comte's reading of Saint-Simon) that pre-dated the post-1848 cultural turn. The new imperialism's specific regional outcomes were shaped by the strategic, economic, and political conditions of each colonized territory. The post-1890 antagonistic alliance system depended on specific decisions: Wilhelm II's 1890 dismissal of Bismarck and non-renewal of the 1887 Reinsurance Treaty with Russia; the eventual Anglo-French Entente Cordiale of 1904; the Anglo-Russian Convention of 1907. Strong responses to AP causation questions identify both the principal causal mechanisms and the contingencies that shaped how the system actually developed.

The regional pattern. By 1914, the unit's nationalist-imperial-modern transformation was most fully developed in northwestern and central Europe (Britain, France, the German Empire, the Low Countries, Italy). It was substantial but partial in southern and east-central Europe (Spain, the Habsburg Empire). It was largely absent from the Russian and Ottoman peripheries, where dynastic-autocratic and pre-industrial patterns persisted alongside selective modernization. The late-Russian autocracy survived the Russo-Japanese War of 1904-1905 and the 1905 Russian Revolution but was already strained by 1914; the Ottoman Empire's late-nineteenth-century territorial losses (Greek independence 1830, Balkan independence movements through the late nineteenth century, Italian and Balkan wars 1911-1913) had brought the empire to the edge of dissolution by the eve of the First World War. The contrast would shape European and global political and military history through the First World War, the Russian Revolution of 1917, the post-1918 settlement, and the interwar period — the developments Unit 8 will cover.

Three sources spanning the unit's arc: Mazzini's mid-century articulation of Romantic-era nationalist thought; Bismarck's late-century articulation of Realpolitik diplomacy; and Hobson's late-century critique of the new imperialism.

1. (Causation, Skill 1.B) Construct the explicit causation argument that runs through Unit 7. Identify the principal five-step causal chain and provide one specific example for each step.
2. (Causation) Account for KC-3.4.II and KC-3.4.III: how did the breakdown of the Concert of Europe open the way for Italian and German unification, and how did the unifications reshape the European balance of power? Cite specific events between 1830 and 1871.
3. (Causation) Account for KC-3.5 and KC-3.5.II: how did the new imperialism and the second industrial revolution combine to produce European control of global empires? Cite the principal motives, the principal enabling technologies, and the principal regional outcomes.
4. (Causation) Account for KC-3.6 and KC-3.6.II: how did European cultural and intellectual life shift after 1848 toward a realist and materialist worldview, and how did the late-century Modernist break complicate that turn? Cite Darwin, the mid-century Realists, and the late-century Modernists.
5. (Causation) Account for the influence of nationalist and imperialist movements on European and global stability through 1914. How did the cumulative effect of Unit 7's developments shape the diplomatic and political climate that produced the First World War?

Draft alignment — pending educator review. AP European History codes correspond to the official College Board Course and Exam Description (Effective Fall 2023, V.1). Statements below are paraphrased in the CountryReports voice; refer to the College Board's published CED for verbatim wording.