Modern History Cheat Sheet

The core ideas of Modern History distilled into a single, scannable reference — perfect for review or quick lookup.

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Quick Reference

The Enlightenment

An intellectual and philosophical movement of the 17th and 18th centuries that emphasized reason, individualism, and skepticism of traditional authority. Thinkers like Locke, Voltaire, and Rousseau argued for natural rights, separation of powers, and the social contract, profoundly influencing modern democratic thought.

The Industrial Revolution

A period of rapid industrialization beginning in Britain around 1760, characterized by the transition from agrarian economies to machine-based manufacturing. It introduced the factory system, steam power, and mass production, fundamentally altering labor, urbanization, and global trade patterns.

Imperialism and Colonialism

The policy and practice by which powerful nations extended political, economic, and cultural control over weaker territories. European powers carved up Africa and Asia in the 19th century, exploiting resources and labor while imposing Western institutions, languages, and borders that continue to shape those regions today.

Nationalism

A political ideology that emphasizes loyalty, devotion, and identification with a particular nation-state or ethnic group. Nationalism was a driving force behind the unification of Germany and Italy, the dissolution of multi-ethnic empires, and both constructive independence movements and destructive xenophobic ideologies.

Total War

A form of warfare in which belligerent nations mobilize all available resources -- military, civilian, industrial, and economic -- toward the war effort, blurring the distinction between combatants and non-combatants. World Wars I and II exemplified total war on an unprecedented scale.

The Cold War

A geopolitical rivalry between the United States and the Soviet Union lasting from approximately 1947 to 1991, characterized by ideological competition between capitalism and communism, nuclear arms races, proxy wars, and espionage, but no direct military confrontation between the two superpowers.

Decolonization

The process by which colonies gained independence from imperial powers, primarily between the 1940s and 1970s. Decolonization reshaped the political map of Africa, Asia, and the Middle East, creating dozens of new sovereign states while leaving legacies of economic dependency and political instability.

Globalization

The increasing interconnection of the world's economies, cultures, and populations through trade, technology, migration, and the flow of information. While globalization has lifted millions out of poverty, it has also generated debates about inequality, cultural homogenization, and the erosion of national sovereignty.

The French Revolution

A period of radical political and societal upheaval in France from 1789 to 1799 that overthrew the monarchy, established a republic, and culminated in Napoleon's rise. It introduced ideals of liberty, equality, and fraternity, and profoundly influenced revolutionary movements worldwide.

Human Rights Movements

Organized efforts to secure and protect the fundamental rights and freedoms of individuals, including civil rights, women's rights, and anti-apartheid struggles. The Universal Declaration of Human Rights (1948) codified these principles internationally, though enforcement remains an ongoing challenge.

Key Terms at a Glance

Absolutism:A political system in which a single monarch holds supreme, unchecked authority over the state, as exemplified by Louis XIV of France and his famous declaration, 'L'etat, c'est moi' (I am the state).

Appeasement:A diplomatic policy of making concessions to an aggressive power to avoid conflict, most notably associated with Britain's accommodation of Nazi Germany's territorial demands before World War II.

Armistice:A formal agreement to cease hostilities, as in the Armistice of November 11, 1918, which ended fighting on the Western Front in World War I.

Balance of Power:A principle in international relations where nations seek to prevent any single state from becoming dominant, often through alliances and shifting coalitions.

Bolshevism:The revolutionary socialist ideology and movement led by Vladimir Lenin, advocating the overthrow of capitalism through a disciplined vanguard party and the establishment of a dictatorship of the proletariat.

Capitalism:An economic system based on private ownership of the means of production, free markets, and the pursuit of profit, which became the dominant global economic model following the Industrial Revolution.

Communism:A political and economic ideology advocating for collective ownership of the means of production and the abolition of private property, as theorized by Karl Marx and implemented in various forms by the Soviet Union, China, and others.

Containment:The U.S. Cold War strategy aimed at preventing the spread of communism beyond its existing borders, articulated by diplomat George Kennan and implemented through the Truman Doctrine and related policies.

Détente:A period of eased tensions between the U.S. and Soviet Union during the 1970s, marked by arms control agreements (SALT treaties) and increased diplomatic engagement.

Fascism:An authoritarian, ultra-nationalist political ideology characterized by dictatorial power, forcible suppression of opposition, and rigid regimentation of society and the economy, as practiced by Mussolini's Italy and Hitler's Germany.

Genocide:The deliberate and systematic destruction of a racial, ethnic, religious, or national group, as defined by the 1948 UN Convention on the Prevention and Punishment of the Crime of Genocide.

Hegemony:The dominance of one state or social group over others, particularly in international relations, where a hegemon exercises disproportionate influence over global politics and economics.

Imperialism:The policy and practice of extending a nation's power through colonization, military force, or economic domination over other territories and peoples.

Mandate System:A system established by the League of Nations after World War I whereby territories of defeated powers were administered by victorious nations under international supervision, notably in the Middle East and Africa.

Mercantilism:An economic theory dominant in early modern Europe holding that national wealth is measured by accumulated precious metals, promoting export surpluses, tariffs, and colonial exploitation.

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