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20th Century History Course
More than 2 million students worldwide

20th Century History Course

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Trace the full arc of the twentieth century — from the alliance systems that ignited World War I to the collapse of the Soviet Union and the rise of globalisation. This course gives you the analytical tools to understand how wars, revolutions, and social movements shaped the world you live in today. If you want to think more clearly about history and current events, this is where you start.

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What you will learn:

You will study the causes and consequences of both World Wars, the ideological competition of the Cold War, and the decolonisation movements that reshaped Asia, Africa, and the Middle East. You will examine how authoritarian regimes rose to power, how the Holocaust and other genocides unfolded, and how civil rights and social movements transformed societies. The course also covers economic history, from the Great Depression through neoliberal globalisation, and traces how science and technology changed everyday life. You will develop research skills for evaluating historical sources and constructing evidence-based arguments. By the end, you will be equipped to analyse complex historical events and apply that thinking to contemporary issues.

How you study in practice 20th Century History Course

How you practise 20th Century History Course

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Course content

8 Chapters • 37 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Origins of the Twentieth Century World

  • Lesson 1 • The Late Victorian Global Order

    Examines imperial rivalries, industrial capitalism, and nationalist movements circa 1890–1900. Provides the structural backdrop against which all 20th-century conflicts and reforms unfold.

  • Lesson 2 • Alliance Systems and Power Rivalries

    Traces the formation of competing military alliances and diplomatic tensions before 1914. Connects structural instability to the outbreak of large-scale conflict.

  • Lesson 3 • Social Movements Before the Wars

    Surveys labour, suffrage, and socialist movements reshaping domestic politics across industrialized nations. Grounds students in the social pressures that would intensify through the century.

  • Lesson 4 • Technology and Society at 1900

    Analyses how industrialization, communication advances, and urbanization transformed daily life. Sets the stage for understanding how technology accelerated historical change.

Chapter 2See details

World War I and Its Consequences

  • Lesson 1 • The War's Military Dimensions

    Examines trench warfare, new weapons technology, and multi-front strategy. Connects industrial capacity to battlefield outcomes.

  • Lesson 2 • Causes and Outbreak of War

    Dissects the immediate triggers and long-term causes of the 1914 conflict. Builds on alliance systems and imperial rivalries introduced in Chapter 1.

  • Lesson 3 • Peacemaking and the Postwar Order

    Evaluates the 1919 peace settlements, new state formation, and the League of Nations. Establishes the fragile international framework that shaped the interwar period.

  • Lesson 4 • Home Fronts and Total War

    Analyses economic mobilization, propaganda, and civilian experience during wartime. Shows how war penetrated every aspect of society.

Chapter 3See details

The Interwar Period, 1919–1939

  • Lesson 1 • Stalinism and the Soviet Experiment

    Examines Soviet industrialization, collectivization, and political terror under Stalin. Provides a comparative authoritarian case alongside fascism.

  • Lesson 2 • Road to War: Appeasement and Aggression

    Traces diplomatic failures, rearmament, and territorial aggression leading to 1939. Synthesizes interwar developments into the structural causes of World War II.

  • Lesson 3 • The Great Depression's Global Impact

    Analyses the causes and worldwide effects of the 1929 economic collapse. Links economic devastation to political radicalization and policy experimentation.

  • Lesson 4 • The Rise of Fascism and Nazism

    Traces the ideological foundations and political ascent of fascist movements in Europe. Explains how economic crisis and nationalist resentment enabled authoritarian takeovers.

  • Lesson 5 • Democracy Under Pressure

    Surveys the fragility of new democracies and the appeal of extremist alternatives in the 1920s. Connects postwar grievances to political polarization.

Chapter 4See details

World War II: Global Conflict

  • Lesson 1 • The Holocaust and Genocide

    Examines the systematic murder of Jews and other targeted groups under Nazi rule. Addresses perpetrator ideology, bystander behavior, and survivor testimony.

  • Lesson 2 • European Theater: Blitzkrieg to Stalingrad

    Examines German military strategy, the fall of France, and the Eastern Front turning point. Builds on interwar rearmament and alliance dynamics from Chapter 3.

  • Lesson 3 • Human and Material Costs of the War

    Quantifies civilian casualties, displacement, and infrastructure destruction. Establishes the scale of devastation that shaped postwar reconstruction priorities.

  • Lesson 4 • The Pacific War and Asian Dimensions

    Analyses Japanese imperial expansion, Pearl Harbor, and island-hopping campaigns. Situates the Pacific conflict within broader Asian nationalist and colonial contexts.

  • Lesson 5 • Allied Strategy and Victory

    Traces Allied coalition-building, D-Day, and the final campaigns in Europe and the Pacific. Analyses how industrial capacity and strategic coordination determined the outcome.

Chapter 5See details

The Cold War Era, 1945–1991

  • Lesson 1 • Origins of the Cold War

    Examines postwar power vacuums, ideological incompatibility, and early confrontations. Connects wartime alliance tensions to the emergence of a bipolar world order.

  • Lesson 2 • Decolonization and the Third World

    Analyses the dismantling of European empires and the emergence of newly independent states. Connects decolonization to Cold War competition for influence in the Global South.

  • Lesson 3 • Nuclear Arms Race and Deterrence

    Traces the development of nuclear arsenals and the doctrine of mutually assured destruction. Explains how nuclear weapons redefined the nature of great-power conflict.

  • Lesson 4 • End of the Cold War

    Traces Soviet decline, Gorbachev's reforms, and the collapse of communist regimes. Synthesizes Cold War dynamics into an explanation of the 1989–1991 transformation.

  • Lesson 5 • Hot Wars in the Cold War

    Examines proxy conflicts in Korea, Vietnam, and elsewhere where superpower rivalry turned violent. Shows how Cold War logic shaped regional conflicts worldwide.

Chapter 6See details

Decolonisation and Postcolonial Struggles

  • Lesson 1 • Asian Independence Movements

    Covers nationalist movements in South and Southeast Asia leading to independence. Builds on Cold War and imperial contexts established in earlier chapters.

  • Lesson 2 • Middle East: Conflict and State Formation

    Examines the creation of Israel, Arab nationalism, and recurring regional conflicts. Connects colonial-era borders and Cold War intervention to ongoing instability.

  • Lesson 3 • Postcolonial Development Challenges

    Analyses economic underdevelopment, political instability, and dependency in postcolonial states. Evaluates competing development models and their outcomes.

  • Lesson 4 • African Nationalism and Independence

    Traces pan-African ideology and independence movements from the 1950s through the 1970s. Examines both negotiated and violent paths to sovereignty.

Chapter 7See details

Social Revolutions and Civil Rights

  • Lesson 1 • Student and Youth Revolts of the 1960s

    Analyses the global wave of student protest in 1968 and its political and cultural impact. Connects generational conflict to Cold War politics and social change.

  • Lesson 2 • Women's Liberation Movements

    Examines second-wave feminism, reproductive rights campaigns, and workplace equality struggles. Traces how feminist activism transformed law and social norms globally.

  • Lesson 3 • LGBTQ+ Rights and Identity Politics

    Traces the emergence of LGBTQ+ rights movements from the late 1960s through the century's end. Situates identity politics within broader social movement frameworks.

  • Lesson 4 • The Civil Rights Movement in America

    Traces the struggle against racial segregation from legal challenges to mass protest. Connects to broader global decolonisation and human rights frameworks.

  • Lesson 5 • Anti-Apartheid and Liberation Movements

    Examines resistance to apartheid in South Africa and liberation struggles in southern Africa. Applies social movement analysis to a sustained, decades-long campaign.

Chapter 8See details

Globalisation and the Late Twentieth Century

  • Lesson 1 • Technological Revolution and Information Age

    Traces the rise of computing, the internet, and digital communication in the late 20th century. Analyses how information technology transformed economies and societies.

  • Lesson 2 • Post-Cold War World Order

    Analyses the unipolar moment, ethnic conflicts, and new security challenges after 1991. Evaluates competing visions of world order in the absence of superpower rivalry.

  • Lesson 3 • Environmental Crisis and Global Awareness

    Examines the recognition of environmental degradation and the rise of global environmental politics. Connects industrial growth to ecological consequences addressed in international forums.

  • Lesson 4 • Legacies and Historical Memory

    Synthesises the century's major transformations and examines how societies remember and interpret them. Prepares students to apply historical thinking to contemporary issues.

  • Lesson 5 • Economic Neoliberalism and Globalisation

    Examines the shift from Keynesian to market-oriented economic policies and its global spread. Connects ideological change to concrete policy outcomes and inequality.

Certification

Your valid completion certificate

This course is for you:

  • Undergraduate students: seeking a rigorous foundation before advanced history coursework.

  • Journalists and writers: needing historical depth to contextualise political and global reporting.

  • Policy professionals: wanting structured knowledge of 20th-century conflicts and their consequences.

  • Educators: looking to refresh and deepen their content knowledge for classroom instruction.

  • Career changers: entering international relations, law, or public service from unrelated fields.

  • Curious adults: driven to understand why the world looks the way it does today.

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