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AP US History: Period 9: Conservatism, Security, and Polarization, 1980–Present

AP US History · Work through your exam, one topic at a time.

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Period 9: Conservatism, Security, and Polarization, 1980–Present

Conservatism resurgent

Ronald Reagan's 1980 election marked a turn toward tax cuts, deregulation, and anti-communist assertiveness. Supply-side economics promised growth; deficits grew. Reagan's military buildup and diplomacy with Gorbachev coincided with Soviet collapse, symbolized by the 1989 Berlin Wall fall and the 1991 dissolution of the USSR. The 1991 Gulf War displayed unilateral American power. Clinton's presidency combined centrist economics, NAFTA, welfare reform, and impeachment.

Security and polarization

The September 11 attacks produced the War on Terror: Afghanistan in 2001, Iraq in 2003, the Patriot Act, and debates over surveillance and torture. The 2008 financial crisis led to bailouts and the Great Recession; Obama responded with stimulus and the Affordable Care Act. Partisan polarization, social media, immigration debates, and Supreme Court fights shaped the 2010s and 2020s.

Traps: Reagan did not single-handedly end the Cold War; Soviet internal decay and Gorbachev's reforms mattered. The Patriot Act did not suspend all civil liberties. The ACA was a market-based subsidy system, not government-run medicine. 'Post-Cold War' does not mean no conflict.

Worked example: if asked what most changed American foreign policy after 9/11, choose the shift from great-power containment to counterterrorism and preemptive war.

Rule of thumb: trace policy to its coalition-Reagan's coalition produced tax cuts, 9/11 produced security legislation, and 2008 produced regulation and stimulus.