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The Holocaust - AP European History Study Guide

Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026

Learn with study guides reviewed by top AP teachers. This guide takes about 16 minutes to read.

Getting Started

During the era of the World Wars, from 1914 to 1945, the rise of fascist and totalitarian powers dramatically reshaped Europe. This period saw radical ideologies, particularly in Nazi Germany, attempt to violently re-engineer society, leading to unprecedented destruction and fundamentally altering cultural and national identities across the continent. This chapter focuses on the causes and devastating consequences of the Holocaust, the ultimate expression of Nazi Germany's ideological goals.

What You Should Be Able to Do

After studying this topic, you should be able to:

  • Explain the ideological motivations behind Nazi Germany's pursuit of a "new racial order."

  • Analyze how collaboration between Nazi Germany and other governments enabled the Holocaust.

  • Describe the various ways in which World War II and the Holocaust decimated European populations.

  • Evaluate the impact of the war and genocide on Europe's social structures and demographic landscape.

Key Developments & Analysis

This section explores the causes that led to the Holocaust and its wide-ranging effects on European society, culture, and identity.

Causes of the Holocaust

The Holocaust was not a spontaneous event but the culmination of specific ideological and political factors that gained traction in the early 20th century.

  • Ideological Fuel: The Nazi regime was driven by a virulent form of racism and anti-Semitism, which is prejudice, discrimination, or hatred directed against Jews. This ideology falsely portrayed Jews as a separate and inferior race whose presence threatened the purity and strength of the German nation.

  • Political Goal: Fueled by these beliefs, Nazi Germany sought to establish a "new racial order" in Europe. This was a vision for a restructured European society based on a racial hierarchy, with the so-called "Aryan" German people at the top and other groups, especially Jews, Slavs, and Roma, slated for subjugation, expulsion, or extermination.

  • Enabling Factors: The Nazis were not alone in their efforts. The implementation of their racial policies was made possible through the cooperation of other Axis powers (nations aligned with Germany, such as Italy and Japan) and collaborationist governments (regimes in conquered territories that actively worked with the German occupiers). These allies and collaborators often participated in rounding up and deporting targeted populations, thereby extending the reach and efficiency of the Nazi genocide.

Effects and Impacts of the Holocaust & WWII

The war and the systematic genocide perpetrated by the Nazis had immediate and long-term consequences that profoundly scarred the continent.

Immediate Effects

  • The Holocaust: The most direct result of the "new racial order" was the Holocaust, the systematic, state-sponsored persecution and murder of approximately six million European Jews by the Nazi regime and its collaborators. This event represented the near-total destruction of a vibrant and deeply rooted European culture.

  • Murder of Other Groups: Alongside European Jewry, millions of individuals from other groups were targeted and murdered by the Nazis for racial, political, or ideological reasons. These victims included Poles and other Slavs, the Roma, people with disabilities, political dissidents, and homosexuals.

  • Demographic Collapse: World War II decimated a generation of Russian and German men. The immense military casualties on the Eastern Front, in particular, created a severe gender imbalance and population deficit that would affect these nations for decades.

Long-Term Impacts

  • Forced Migrations: The war and the Holocaust triggered one of the largest forced migrations in human history. Survivors of the genocide, displaced persons, and ethnic Germans expelled from Eastern Europe were left homeless, leading to a massive postwar refugee crisis and permanently altering the ethnic map of Europe.

  • Undermining of Social Hierarchies: The immense destruction and social upheaval of the war undermined prewar class hierarchies. The death of old elites, the destruction of property, and the rise of new political systems (especially in Soviet-controlled Eastern Europe) created opportunities for social change and restructuring that would have been unimaginable before 1939.

Data & Organization Tools

Nazi Germany's "New Racial Order": Targeted Groups

This table organizes the major groups targeted by the Nazi regime, reflecting the goals and consequences outlined in their ideology.

Targeted GroupNazi Rationale for PersecutionPrimary Outcome
European JewryConsidered the primary racial enemy and a threat to German "purity" and global order.The Holocaust: the systematic murder of six million Jews and the virtual destruction of Jewish life and culture in Europe.
Slavic PeoplesDeemed racially inferior ("Untermenschen" or sub-humans) and occupying lands desired for German settlement ("Lebensraum").Mass murder, ethnic cleansing, forced labor, and subjugation, particularly affecting Poles, Russians, and other Eastern Europeans.
Other Targeted GroupsGroups such as the Roma, people with disabilities, and homosexuals were considered racially "impure," "asocial," or "degenerate."Subjected to persecution, forced sterilization, medical experimentation, and mass murder alongside the Jews.
Political OpponentsCommunists, socialists, and other dissidents were seen as ideological enemies threatening the totalitarian state.Imprisonment, torture, and execution in concentration camps.

Evidence Bank

  • Anti-Semitism: A form of racism directed at Jewish people. In Nazi ideology, this was a core belief that framed Jews as a race rather than a religious group and blamed them for Germany's social, political, and economic problems.

  • "New Racial Order": The Nazi plan to re-engineer the population of Europe based on a racial hierarchy. This goal was the central justification for their policies of conquest, enslavement, and genocide.

  • The Holocaust: The state-sponsored, systematic genocide of six million Jews by Nazi Germany and its collaborators. It stands as a singular event of industrialized mass murder in human history.

  • Axis Powers: The military alliance, led by Germany, Italy, and Japan, that fought against the Allied powers in World War II. Some Axis members, like Hungary and Romania, participated in the Holocaust.

  • Collaborationist Governments: Regimes in countries occupied by Nazi Germany that cooperated with the occupiers. Examples include the Vichy regime in France, which assisted in deporting Jews to death camps.

  • Forced Migrations: The mass movement of populations during and after the war, including refugees fleeing persecution, survivors of the Holocaust, and ethnic Germans expelled from Eastern Europe. These movements redrew the demographic map of the continent.

  • Decimation of a Generation: The catastrophic loss of life among soldiers, particularly German and Russian men, during World War II. This loss had profound long-term social and demographic effects on their respective countries.

Skill Snapshots

  • Causation:

    1. Nazi ideology, fueled by racism and anti-Semitism, → led to the political goal of a "new racial order."

    2. The establishment of a "new racial order" → culminated in the Holocaust and the murder of millions of others.

    3. The immense scale of fighting in World War II → resulted in the decimation of a generation of Russian and German men.

  • Comparison:

    1. Nazi Germany initiated and directed the Holocaust, while collaborationist governments often played a crucial supporting role in implementing it locally.

    2. While European Jewry was the primary target for total extermination, other groups like Slavs were targeted for enslavement and partial elimination to serve German expansion.

    3. Both Germany and Russia lost a generation of men, but the impact in Russia was compounded by immense civilian losses and the destruction of its western territories.

  • Continuity & Change over Time (CCOT):

    • Baseline: Before the rise of Nazism, Jewish communities were an integral, though often persecuted, part of European cultural and national life for centuries.

    • Change: The Holocaust virtually destroyed European Jewry, eradicating centuries of cultural development and fundamentally altering the identity of nations like Poland and Germany.

    • Change: The war and its aftermath led to large-scale migrations that created more ethnically homogeneous nation-states in some parts of Europe, a sharp change from the multi-ethnic empires of the pre-WWI era.

    • Continuity: Despite the defeat of Nazism, anti-Semitism and racism did not disappear from Europe and have remained persistent cultural and political issues.

Common Misconceptions & Clarifications

  1. "The Holocaust only happened in Germany." This is incorrect. The Holocaust was a continent-wide event, carried out wherever Nazi Germany had influence, and it depended heavily on the active cooperation of local collaborationist governments and officials across Europe.

  2. "Jews were the only victims of Nazi persecution." While Jews were the primary target of the Nazi policy of total extermination, the Nazis also murdered millions of others, including Slavs, Roma, political prisoners, and people with disabilities, as part of their "new racial order."

  3. "The Holocaust was simply a byproduct of the war." This is a fundamental misunderstanding. The creation of a "new racial order" and the elimination of European Jewry were central goals of the Nazi regime, not secondary consequences of their military campaigns.

  4. "All Germans were Nazis who supported the Holocaust." While the regime enjoyed significant popular support, it is inaccurate to assume universal complicity. There was a range of responses from ordinary Germans, from enthusiastic participation to silent dissent and, in rare cases, active resistance.

One-Paragraph Summary

The Holocaust was the horrific culmination of Nazi Germany's ideology, which was fundamentally rooted in racism and anti-Semitism. With the goal of establishing a "new racial order" in Europe, the Nazis, aided by Axis powers and local collaborationist governments, systematically murdered six million Jews and millions from other targeted groups. This genocide, combined with the staggering military losses of World War II, decimated a generation of European men, virtually destroyed European Jewish civilization, and triggered massive forced migrations that permanently altered the continent's demographic and cultural landscape. The war and the Holocaust shattered prewar social structures, leaving a legacy that profoundly affected European identity for the remainder of the 20th century and beyond.