Spanning countries across the globe, the antinuclear movement was the combined effort of millions of people to challenge the superpowers’ reliance on nuclear weapons during the Cold War. Encompassing an array of tactics, from radical dissent to public protest to opposition within the government, this movement succeeded in constraining the arms race and helping to make the use of nuclear weapons politically unacceptable. Antinuclear activists were critical to the establishment of arms control treaties, although they failed to achieve the abolition of nuclear weapons, as anticommunists, national security officials, and proponents of nuclear deterrence within the United States and Soviet Union actively opposed the movement. Opposition to nuclear weapons evolved in tandem with the Cold War and the arms race, leading to a rapid decline in antinuclear activism after the Cold War ended.
From its inception as a nation in 1789, the United States has engaged in an environmental diplomacy that has included attempts to gain control of resources, as well as formal diplomatic efforts to regulate the use of resources shared with other nations and peoples. American environmental diplomacy has sought to gain control of natural resources, to conserve those resources for the future, and to protect environmental amenities from destruction. As an acquirer of natural resources, the United States has focused on arable land as well as on ocean fisheries, although around 1900, the focus on ocean fisheries turned into a desire to conserve marine resources from unregulated harvesting.
The main 20th-century U.S. goal was to extend beyond its borders its Progressive-era desire to utilize resources efficiently, meaning the greatest good for the greatest number for the longest time. For most of the 20th century, the United States was the leader in promoting global environmental protection through the best science, especially emphasizing wildlife. Near the end of the century, U.S. government science policy was increasingly out of step with global environmental thinking, and the United States often found itself on the outside. Most notably, the attempts to address climate change moved ahead with almost every country in the world except the United States.
While a few monographs focus squarely on environmental diplomacy, it is safe to say that historians have not come close to tapping the potential of the intersection of the environmental and diplomatic history of the United States.
Foreign economic policy involves the mediation and management of economic flows across borders. Over two and a half centuries, the context for U.S. foreign economic policy has transformed. Once a fledgling republic on the periphery of the world economy, the United States has become the world’s largest economy, the arbiter of international economic order, and a predominant influence on the global economy. Throughout this transformation, the making of foreign economic policy has entailed delicate tradeoffs between diverse interests—political and material, foreign and domestic, sectional and sectoral, and so on. Ideas and beliefs have also shaped U.S. foreign economic policy—from Enlightenment-era convictions about the pacifying effects of international commerce to late 20th-century convictions about the efficacy of free markets.
The Soviet Union’s successful launch of the first artificial satellite Sputnik 1 on October 4, 1957, captured global attention and achieved the initial victory in what would soon become known as the space race. This impressive technological feat and its broader implications for Soviet missile capability rattled the confidence of the American public and challenged the credibility of U.S. leadership abroad. With the U.S.S.R.’s launch of Sputnik, and then later the first human spaceflight in 1961, U.S. policymakers feared that the public and political leaders around the world would view communism as a viable and even more dynamic alternative to capitalism, tilting the global balance of power away from the United States and towards the Soviet Union.
Reactions to Sputnik confirmed what members of the U.S. National Security Council had predicted: the image of scientific and technological superiority had very real, far-reaching geopolitical consequences. By signaling Soviet technological and military prowess, Sputnik solidified the link between space exploration and national prestige, setting a course for nationally funded space exploration for years to come. For over a decade, both the Soviet Union and the United States funneled significant financial and personnel resources into achieving impressive firsts in space, as part of a larger effort to win alliances in the Cold War contest for global influence.
From a U.S. vantage point, the space race culminated in the first Moon landing in July 1969. In 1961, President John F. Kennedy proposed Project Apollo, a lunar exploration program, as a tactic for restoring U.S. prestige in the wake of Soviet cosmonaut Yuri Gagarin’s spaceflight and the failure of the Bay of Pigs invasion. To achieve Kennedy’s goal of sending a man to the Moon and returning him safely back to Earth by the end of the decade, the United States mobilized a workforce in the hundreds of thousands. Project Apollo became the most expensive government funded civilian engineering program in U.S. history, at one point stretching to more than 4 percent of the federal budget. The United States’ substantial investment in winning the space race reveals the significant status of soft power in American foreign policy strategy during the Cold War.
Gregory A. Daddis
For nearly a decade, American combat soldiers fought in South Vietnam to help sustain an independent, noncommunist nation in Southeast Asia. After U.S. troops departed in 1973, the collapse of South Vietnam in 1975 prompted a lasting search to explain the United States’ first lost war. Historians of the conflict and participants alike have since critiqued the ways in which civilian policymakers and uniformed leaders applied—some argued misapplied—military power that led to such an undesirable political outcome. While some claimed U.S. politicians failed to commit their nation’s full military might to a limited war, others contended that most officers fundamentally misunderstood the nature of the war they were fighting. Still others argued “winning” was essentially impossible given the true nature of a struggle over Vietnamese national identity in the postcolonial era. On their own, none of these arguments fully satisfy. Contemporary policymakers clearly understood the difficulties of waging a war in Southeast Asia against an enemy committed to national liberation. Yet the faith of these Americans in their power to resolve deep-seated local and regional sociopolitical problems eclipsed the possibility there might be limits to that power. By asking military strategists to simultaneously fight a war and build a nation, senior U.S. policymakers had asked too much of those crafting military strategy to deliver on overly ambitious political objectives. In the end, the Vietnam War exposed the limits of what American military power could achieve in the Cold War era.
Betsy A. Beasley
American cities have been transnational in nature since the first urban spaces emerged during the colonial period. Yet the specific shape of the relationship between American cities and the rest of the world has changed dramatically in the intervening years. In the mid-20th century, the increasing integration of the global economy within the American economy began to reshape US cities. In the Northeast and Midwest, the once robust manufacturing centers and factories that had sustained their residents—and their tax bases—left, first for the South and West, and then for cities and towns outside the United States, as capital grew more mobile and businesses sought lower wages and tax incentives elsewhere. That same global capital, combined with federal subsidies, created boomtowns in the once-rural South and West. Nationwide, city boosters began to pursue alternatives to heavy industry, once understood to be the undisputed guarantor of a healthy urban economy. Increasingly, US cities organized themselves around the service economy, both in high-end, white-collar sectors like finance, consulting, and education, and in low-end pink-collar and no-collar sectors like food service, hospitality, and health care. A new legal infrastructure related to immigration made US cities more racially, ethnically, and linguistically diverse than ever before.
At the same time, some US cities were agents of economic globalization themselves. Dubbed “global cities” by celebrants and critics of the new economy alike, these cities achieved power and prestige in the late 20th century not only because they had survived the ruptures of globalization but because they helped to determine its shape. By the end of the 20th century, cities that are not routinely listed among the “global city” elite jockeyed to claim “world-class” status, investing in high-end art, entertainment, technology, education, and health care amenities to attract and retain the high-income white-collar workers understood to be the last hope for cities hollowed out by deindustrialization and global competition. Today, the extreme differences between “global cities” and the rest of US cities, and the extreme socioeconomic stratification seen in cities of all stripes, is a key concern of urbanists.
Post-1945 immigration to the United States differed fairly dramatically from America’s earlier 20th- and 19th-century immigration patterns, most notably in the dramatic rise in numbers of immigrants from Asia. Beginning in the late 19th century, the U.S. government took steps to bar immigration from Asia. The establishment of the national origins quota system in the 1924 Immigration Act narrowed the entryway for eastern and central Europeans, making western Europe the dominant source of immigrants. These policies shaped the racial and ethnic profile of the American population before 1945. Signs of change began to occur during and after World War II. The recruitment of temporary agricultural workers from Mexico led to an influx of Mexicans, and the repeal of Asian exclusion laws opened the door for Asian immigrants. Responding to complex international politics during the Cold War, the United States also formulated a series of refugee policies, admitting refugees from Europe, the western hemisphere, and later Southeast Asia. The movement of people to the United States increased drastically after 1965, when immigration reform ended the national origins quota system. The intricate and intriguing history of U.S. immigration after 1945 thus demonstrates how the United States related to a fast-changing world, its less restrictive immigration policies increasing the fluidity of the American population, with a substantial impact on American identity and domestic policy.
Don H. Doyle
America’s Civil War became part of a much larger international crisis as European powers, happy to see the experiment in self-government fail in America’s “Great Republic,” took advantage of the situation to reclaim former colonies in the Caribbean and establish a European monarchy in Mexico. Overseas, in addition to their formal diplomatic appeals to European governments, both sides also experimented with public diplomacy campaigns to influence public opinion. Confederate foreign policy sought to win recognition and aid from Europe by offering free trade in cotton and aligning their cause with that of the aristocratic anti-democratic governing classes of Europe. The Union, instead, appealed to liberal, republican sentiment abroad by depicting the war as a trial of democratic government and embracing emancipation of the slaves. The Union victory led to the withdrawal of European empires from the New World: Spain from Santo Domingo, France from Mexico, Russia from Alaska, and Britain from Canada, and the destruction of slavery in the United States hastened its end in Puerto Rico, Cuba, and Brazil.
C. J. Alvarez
The region that today constitutes the United States–Mexico borderland has evolved through various systems of occupation over thousands of years. Beginning in time immemorial, the land was used and inhabited by ancient peoples whose cultures we can only understand through the archeological record and the beliefs of their living descendants. Spain, then Mexico and the United States after it, attempted to control the borderlands but failed when confronted with indigenous power, at least until the late 19th century when American capital and police established firm dominance. Since then, borderland residents have often fiercely contested this supremacy at the local level, but the borderland has also, due to the primacy of business, expressed deep harmonies and cooperation between the U.S. and Mexican federal governments. It is a majority minority zone in the United States, populated largely by Mexican Americans. The border is both a porous membrane across which tremendous wealth passes and a territory of interdiction in which noncitizens and smugglers are subject to unusually concentrated police attention. All of this exists within a particularly harsh ecosystem characterized by extreme heat and scarce water.
Relations between the United States and Mexico have rarely been easy. Ever since the United States invaded its southern neighbor and seized half of its national territory in the 19th century, the two countries have struggled to establish a relationship based on mutual trust and respect. Over the two centuries since Mexico’s independence, the governments and citizens of both countries have played central roles in shaping each other’s political, economic, social, and cultural development. Although this process has involved—even required—a great deal of cooperation, relations between the United States and Mexico have more often been characterized by antagonism, exploitation, and unilateralism. This long history of tensions has contributed to the three greatest challenges that these countries face together today: economic development, immigration, and drug-related violence.