Contextualizing Period 9, 1980 to the Present

By the end of this lesson, students will be able to:

• Explain why Period 9 is conventionally bounded by 1980 (the election of Ronald Reagan and the conservative ascendancy) and the open-ended present (with coverage running through whatever events the most recent CED revision incorporates).
• Identify the three major historical developments that organize Unit 9: the rise of conservatism, the end of the Cold War and the new American role in the world, and the post-1980 economic, technological, and demographic transformation.
• Describe how the Reagan election, the collapse of the Soviet Union, the digital revolution, and the September 11 attacks together produced the contemporary United States.
• Use Skill 4 (Contextualization) to situate at least one Period 9 development inside its broader global, economic, and political setting.
• Account for the continuities that connect the late twentieth century to the post-9/11 era, and the shifts that distinguish Period 9 from Period 8 (the postwar liberal order from 1945 to 1980).

Period 9 is the most recent unit of the AP US History course and the only one whose history has not yet finished. In 1980, the United States was a Cold War superpower locked in a nuclear standoff with the Soviet Union, governed by a New Deal political consensus that had dominated national policy for nearly fifty years, and powered by an industrial economy whose factories employed roughly one in five American workers. Forty years later, the Soviet Union no longer exists, the New Deal consensus has been replaced by a conservative one and then contested again, factories employ less than one worker in twelve, and the country has fought the longest wars in its history in Afghanistan and Iraq. Three braided developments produced that transformation: a conservative ascendancy in politics and policy, an information-age economic restructuring, and a fundamental shift in the country's role in the world (KC-9.1, KC-9.2, KC-9.3).

The first development is the rise of a conservative movement that captured one major party and reshaped the federal government (KC-9.1). The election of Ronald Reagan in 1980 brought together three constituencies that had drifted apart during the New Deal era: economic conservatives who wanted lower taxes and less regulation, social conservatives who saw the cultural changes of the 1960s and 1970s as a crisis, and Cold War hawks who wanted to confront the Soviet Union rather than negotiate with it (KC-9.1.I.A). Reagan's first inaugural address, in which he declared that "government is not the solution to our problem; government is the problem," signaled the new direction. Within his first year in office, Congress passed the Economic Recovery Tax Act of 1981, which cut the top marginal income tax rate from seventy percent to fifty percent and put supply-side economics at the center of federal policy. The administration also pursued deregulation across transportation, banking, and broadcasting, a project Reagan dramatized by firing more than eleven thousand striking air traffic controllers in August 1981. Outside the executive branch, the Federalist Society, founded in 1982, began to build the conservative legal pipeline that would supply federal judicial nominees for the next forty years, and the religious right mobilized around abortion, public school prayer, and the changing American family (KC-9.1.I.B). Conservative success was uneven: signature New Deal and Great Society programs such as Social Security and Medicare survived intact, and many of the social shifts of the 1960s and 1970s proved difficult to reverse (KC-9.1.I.C). But the conservative movement set the terms of national debate from 1980 onward, and even the Clinton and Obama presidencies governed inside the constraints it had built (Theme PCE).

The second development is a fundamental shift in the country's place in the world (KC-9.3). When Period 9 opened, the United States had been engaged in a Cold War standoff with the Soviet Union for thirty-five years. Reagan's first term escalated that confrontation through the largest peacetime defense buildup in American history and through public rhetoric, including the 1983 "evil empire" speech, that abandoned the detente of the 1970s. His second term reversed course. After Mikhail Gorbachev came to power in 1985 and introduced the reforms known as glasnost and perestroika, Reagan negotiated the Intermediate-Range Nuclear Forces Treaty of 1987 and stood at the Brandenburg Gate to demand that Gorbachev "tear down this wall" (KC-9.3.I.A). The Berlin Wall fell in November 1989, and the Soviet Union dissolved at the end of 1991, ending the bipolar world order that had organized international relations since 1945 (KC-9.3.I.B). The Persian Gulf War of 1991 served as the first test of post-Cold War American military power, and the decade that followed produced new diplomatic relationships, new global power vacuums, and new transnational threats: international conflict, terrorism, financial instability, and rapidly accelerating migration (KC-9.3.I.C). On September 11, 2001, the al-Qaeda attacks on the World Trade Center and the Pentagon ended the relatively quiet post-Cold War decade and pulled the United States into a global War on Terror that would shape American foreign and domestic policy for the next twenty years (KC-9.3.II.A). The Authorization for Use of Military Force, passed by Congress one week after the attacks, and the USA PATRIOT Act, signed in October 2001, expanded executive authority to surveil, detain, and use force in ways that would remain contested into the present (Theme WOR).

The third development is a transformation of the American economy that ran underneath the politics and the foreign policy (KC-9.2). The industrial base that had built the post-1945 middle class began to contract, and by the early twenty-first century manufacturing employment had fallen by roughly half (KC-9.2.I.A). In its place a service and information economy expanded, organized around personal computing, the internet, and global supply chains. The North American Free Trade Agreement, signed in 1992 and implemented in 1994, integrated the Mexican, Canadian, and American markets and accelerated a broader project of globalization that moved manufacturing offshore while pulling in a flood of consumer goods (KC-9.2.I.B). The 1990s tech boom, the dot-com bubble that burst in 2000, and the housing-driven 2008 financial crisis all sat on the same underlying shift toward finance, services, and information industries (KC-9.2.I.C). Income inequality rose steadily across the period, and the federal response to the 2008 crisis, including the Troubled Asset Relief Program and the Affordable Care Act of 2010, set off the next round of political polarization (KC-9.2.I.D). At the same time the population was reorganizing itself geographically and demographically. The Sun Belt, defined loosely as the southern and western states from Florida through Texas to California, kept growing, while the Rust Belt of the Northeast and the upper Midwest contracted (KC-9.2.II.A). The Immigration Reform and Control Act of 1986, the rapid growth of the Latino and Asian American populations, and rising debates over border security, citizenship, and assimilation reshaped national politics in the 1990s and 2000s (KC-9.2.II.B). Demographic change in turn intensified debates over gender roles, family structure, and racial and national identity, debates the Obergefell v. Hodges decision of 2015 partly resolved and the Dobbs v. Jackson Women's Health Organization decision of 2022 reopened (Theme MIG, Theme WXT).

Four themes will recur across the next six lessons. The PCE theme tracks the conservative ascendancy, the religious right, the Federalist Society, and the political polarization that has defined federal government in the early twenty-first century. The WOR theme follows the closing decade of the Cold War, the collapse of the Soviet Union, the Gulf War, the September 11 attacks, and the wars in Afghanistan and Iraq. The WXT theme traces the shift from manufacturing to services and information industries, the digital revolution, NAFTA and globalization, the 2008 financial crisis, and the long rise in income inequality. The MIG theme covers the continued rise of the Sun Belt, immigration from Latin America and Asia, and the political and cultural debates the new arrivals produced. Topics 9.1 and 9.7 are unit-synthesis lessons rather than thematic lessons; the CED page assigns them no single Thematic Focus, and the canonical map preserves that distinction. Unit 9 is the smallest unit in the course and contains no dual-theme topics.

A contextualizing lesson works best when it samples sources that span the period. The three excerpts below mark the political, demographic, and economic bookends of Period 9. Government documents and federal statistical releases are the safest classroom sources for this period because contemporary journalism and photography remain under copyright.

1. (Continuity and Change) Compare the United States in 1980 with the United States today. Identify two continuities and two significant shifts. Which set is more historically consequential, and on what grounds?
2. (Causation) Trace the causal chain from the Reagan tax cuts of 1981 to the 2008 financial crisis. At which step in the chain do you think a different decision could have produced a different outcome, and why?
3. (Comparison) Compare two of the four Period 9 themes described in the lesson (PCE, WOR, WXT, MIG). What does the comparison reveal about how political, economic, and demographic change have reinforced or interrupted one another since 1980?
4. (Continuity and Change) The end of the Cold War in 1989 to 1991 ended the bipolar world order that had organized American foreign policy since 1945. Identify one foreign-policy continuity that survived the transition and one significant shift that followed. Explain how each shaped the post-9/11 era.
5. (Causation) Account for the global setting that shaped the post-1980 American economy. How did developments in East Asia, Western Europe, and the post-Soviet bloc between 1980 and 2010 shape what was possible inside the United States during the same years?

Draft alignment — pending educator review. AP USH codes correspond to the official College Board Course and Exam Description (Effective Fall 2023, Version 1). Statements below are paraphrased in the CountryReports voice; refer to the College Board's published CED for verbatim wording.