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Fear of communism following the Russian Revolution led to mass arrests and deportations, intensifying anti-left sentiment and encouraging a conservative shift in U.S. politics.
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Economic collapse undermined faith in capitalism and sparked support for government intervention and New Deal liberalism in the U.S.
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The global threat of fascist regimes caused people to rally around democratic ideals and international cooperation, laying the groundwork for post-war alliances.
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Anti-communist paranoia led to blacklists, censorship, and political purges, promoting conformity and fear while stifling dissent in the U.S.
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The scale of Nazi atrocities shifted global views on human rights, justice, and intervention, leading to support for the creation of the UN and international law.
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Ideological conflict between capitalism and communism defined global politics, polarizing domestic opinion and justifying interventionist foreign policies.
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This landmark Supreme Court ruling against school segregation energized the Civil Rights Movement and polarized political debate on race and federal authority.
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Widespread opposition to the war sparked a distrust of government and a new wave of youth-led activism, reshaping liberal and anti-war politics.
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These transformative laws shifted political allegiances, especially in the South, and deepened divides over race, equality, and federal power.
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President Nixon’s resignation due to corruption eroded public trust in government and intensified calls for transparency and media oversight.
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The legalization of abortion galvanized religious conservatives and feminists, polarizing the political landscape on reproductive rights.
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Ronald Reagan’s presidency promoted small government, tax cuts, and traditional values, inspiring a new conservative movement.
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The collapse of the USSR reinforced global faith in liberal democracy and capitalism, while leaving some nations politically destabilized.
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The attacks dramatically shifted political priorities toward national security, surveillance, and foreign intervention, sparking wars and new legislation like the Patriot Act.
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Failure to find weapons of mass destruction damaged credibility in government and shifted public opinion against interventionist foreign policy.
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Economic collapse renewed support for stronger government regulation, exposed systemic inequalities, and energized populist movements.
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The first Black president symbolized progress to many but also triggered backlash that reshaped conservative politics and fueled polarization.
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Trump’s populist, nationalist rhetoric disrupted traditional political norms, deepened polarization, and redefined conservatism in the U.S.
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Mass protests against police violence revived civil rights activism and reshaped debates on race, justice, and systemic reform.