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7.15 Comparison in Period 7

Verified for the 2025 AP US History examCitation:

Compare the relative significance of the major events of the first half of the 20th century in shaping American identity.

Economy

Growth expanded opportunity, while economic instability led to new efforts to reform U.S. society and its economic system.

The period from 1890 to 1945 was marked by a significant shift in the American economy from a rural, agricultural one to an urban, industrial one, as the country saw rapid industrialization and urbanization. The growth of large companies, particularly in industries such as manufacturing, transportation, and finance, played a major role in driving this transition. The development of new technologies, such as the telephone and electricity, and increased immigration also contributed to the growth of urban areas and the expansion of industry.

But the expansion of industry came at a price. Many workers found themselves working long hours in unsanitary conditions to meet the demands of ruthless factory owners.  

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The Progressives, a diverse coalition of political leaders, activists, and intellectuals, sought to address these issues through a variety of measures, including greater government intervention, regulation of big business, reforms to the political system, and improvements to working conditions and the welfare of citizens. They believed that government had a role to play in promoting social justice and improving the lives of all citizens, and their efforts led to significant reforms, such as the establishment of the Federal Reserve System, the establishment of a federal income tax, and the passage of laws aimed at improving working conditions.

But the biggest shock to the American economy came on October 29, 1929: Black Tuesday.*The stock market crash led to widespread panic, as investors and banks lost vast sums of money and many businesses went bankrupt. This, in turn, led to a decline in consumer spending, rising unemployment, and a decline in economic activity that lasted for several years. 

The Great Depression had a profound impact on American society. This involved a significant expansion of the role of government in the American economy, as the government took on a larger responsibility for providing social welfare and employment to its citizens. President Franklin D. Roosevelt's New Deal programs, such as the Social Security Act and the National Industrial Recovery Act, aimed to address the effects of the Great Depression and improve the economy through increased government intervention. 

These programs redefined the goals and ideas of modern American liberalism, emphasizing the role of government in promoting social and economic justice, and establishing the idea that government has a responsibility to ensure the welfare of its citizens. 

Technology

Innovations in communications and technology contributed to the growth of mass culture, while significant changes occurred in internal and international migration patterns.

The innovations in communications and technology, such as the telephone, telegraph, and radio, contributed to the growth of mass culture in America during the early 20th century. These technologies allowed for the rapid dissemination of information and entertainment, and helped to create a more connected and unified national culture.

However, this growth also led to increased debates over the effects of popular culture on public values, morals, and American national identity. Some people argued that the rise of popular culture was having a negative impact on society, by promoting materialism and encouraging a decline in traditional values and morals. 

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Others saw it as a positive development, as it allowed for greater artistic expression and helped to bring people together through shared cultural experiences. The debates over the effects of popular culture on American society continue to this day, as the country continues to grapple with the relationship between culture, values, and national identity.

The most prominent of these battles was the Scopes Trial. The trial was held in Tennessee and centered around the question of whether the state could ban the teaching of evolution in public schools. On one side were those who believed that the Bible was the literal truth and that evolution was a dangerous and anti-religious doctrine. On the other side were those who believed that evolution was a scientifically established fact and that it should be taught in schools as such. 

Economic factors such as unemployment, poverty, and the desire for better opportunities were major drivers of internal migration, as people moved from rural areas to cities in search of work and a better life. At the same time, global events such as World War I and the Russian Revolution led to large-scale international migration, as people fled conflict, persecution, and political instability in their home countries.

Military Power

Participation in a series of global conflicts propelled the United States into a position of international power while renewing domestic debates over the nation’s proper role in the world. 

In 1898, the U.S. gained control of the Hawaiian Islands through a joint resolution of Congress, effectively making Hawaii a U.S. territory. During the Spanish-American War in 1898, the U.S. defeated Spain and gained control of Puerto Rico, Guam, and the Philippines.

As the country expanded its territory and influence, public debates intensified over America's role in the world. Some people argued that the United States had a responsibility to promote its values and interests around the world, while others believed that the country should focus on its own internal affairs and avoid getting involved in the affairs of other countries. These debates reflected the larger questions and anxieties of American society at the time, as the country was struggling to define its place in a rapidly changing world. 

World War I and its aftermath intensified ongoing debates about the nation’s role in the world and how best to achieve national security and pursue American interests. The U.S. emerged from World War I as the world's leading economic power, with a thriving industrial base and abundant natural resources. The U.S. military played a key role in the Allied victory in World War I, and the country's military prowess helped to establish its reputation as a major military power.

America also took an active role in shaping the post-war settlement and international organizations, such as the League of Nations, that were created to maintain peace and stability in the aftermath of the war. However, it retreated back to isolationism after the war. 

World War II  cemented the US' place on the world stage. The war effort led to increased industrial production and job opportunities, which helped to end the Great Depression and led to an economic boom. The war created a shortage of labor, leading to the integration of women and minorities into the workforce. There were also significant advancements in technology and science, including the development of radar, jet engines, and the atomic bomb. The US played a decisive role in defeating the Germans and the Japanese. 

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After the war, Europe was destroyed. The US played a major role in rebuilding Europe through the Marshall Plan, which provided economic assistance to European countries to help rebuild their economies after the war. The US emerged as a superpower after the war, playing a leading role in the formation of international organizations like the United Nations and NATO. It also actively sought to contain Soviet influence around the world. 

This section is really a review section for you to take a step back and look at the big picture of Period 7.

Be able to trace themes and causation related to these three large topics: 

  1. The growth of the US economy, including its ups and downs
  2. The changes in technology and mass culture during this time period
  3. The emergence of the US as a global world power, especially through warfare

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Key Terms to Review (45)

Allied Victory in World War I: The Allied Victory in World War I refers to the successful conclusion of the conflict that saw the coalition of nations, primarily including the United Kingdom, France, Russia, Italy, and later the United States, defeating the Central Powers, which consisted of Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria. This victory not only ended a brutal global conflict but also reshaped political boundaries, established new nations, and led to significant social changes across Europe and beyond.
Atomic Bomb Development: Atomic Bomb Development refers to the scientific and military efforts to create nuclear weapons during World War II, culminating in the successful detonation of atomic bombs in 1945. This project, known as the Manhattan Project, was a collaborative initiative that involved leading scientists and military personnel, and it played a crucial role in shaping international relations and warfare in the post-war period.
Black Tuesday: Black Tuesday refers to October 29, 1929, the day the U.S. stock market crashed, marking the beginning of the Great Depression. This catastrophic event resulted from a combination of over-speculation in stocks, excessive consumer debt, and economic imbalances. The crash led to widespread financial panic, loss of savings, and a severe downturn in the economy that affected millions of Americans.
Communications Innovations: Communications innovations refer to the advancements in technology and methods that have improved the way people transmit information and interact over distances. These innovations played a crucial role in shaping society, culture, and economy during a transformative period, influencing everything from politics to personal relationships.
Electricity Technology: Electricity technology refers to the advancements and innovations in the generation, distribution, and utilization of electrical power. This technology has transformed societies by powering homes, industries, and transportation, leading to significant changes in daily life and economic productivity during a critical period of modernization.
Federal Income Tax: Federal income tax is a tax levied by the national government on the income of individuals and businesses, forming a significant part of federal revenue. This system was established to ensure that the government can fund various programs and services, including social welfare, infrastructure, and defense. The federal income tax system employs a progressive tax rate, meaning that those with higher incomes pay a larger percentage of their earnings in taxes.
Federal Reserve System: The Federal Reserve System, established in 1913, is the central banking system of the United States, responsible for regulating monetary policy, supervising and regulating banks, maintaining financial stability, and providing financial services. It plays a crucial role in influencing the economy by managing interest rates and controlling the money supply, making it a key institution in the context of economic fluctuations during the 20th century.
Finance Industry: The finance industry encompasses a wide range of services and institutions that manage money and facilitate financial transactions. This sector includes banks, investment firms, insurance companies, and real estate companies, all of which play crucial roles in the economy by providing capital, risk management, and liquidity. Understanding this industry is essential as it significantly impacts economic growth and stability, influencing everything from consumer spending to investment strategies.
Franklin D. Roosevelt's New Deal programs: Franklin D. Roosevelt's New Deal programs were a series of federal initiatives launched in response to the Great Depression, aimed at providing relief, recovery, and reform to the struggling American economy. These programs represented a significant shift in the role of the federal government, expanding its involvement in economic affairs and social welfare, and laid the groundwork for modern American liberalism.
Great Depression: The Great Depression was a severe worldwide economic downturn that lasted from 1929 to the late 1930s, marked by a dramatic decline in industrial production, mass unemployment, and widespread poverty. It reshaped the American economy and society, leading to significant changes in government policies and international relations.
Guam Acquisition: The Guam Acquisition refers to the acquisition of Guam by the United States as a result of the Spanish-American War in 1898. This acquisition marked a significant expansion of American territorial holdings in the Pacific and established Guam as a strategic naval base for U.S. interests in the region.
Hawaiian Islands Acquisition: The Hawaiian Islands Acquisition refers to the process through which the United States annexed Hawaii in 1898, transitioning it from a sovereign kingdom to an American territory. This event was a significant moment in American imperialism, showcasing the nation's expansionist policies and its desire for strategic military and economic advantages in the Pacific region.
Immigration Expansion: Immigration Expansion refers to the significant increase in the movement of people from one country to another, particularly in the United States during the late 19th and early 20th centuries. This period saw a dramatic influx of immigrants from Europe, Asia, and other regions, contributing to the growth of cities, the labor force, and cultural diversity. The effects of this expansion were profound, impacting economic development, social dynamics, and political debates around immigration policy.
Industrial Production Increase: Industrial Production Increase refers to the rise in the output of goods produced by factories and industries, reflecting economic growth and technological advancements. This increase is often measured through indices that track production levels across various sectors, including manufacturing, mining, and utilities, and plays a crucial role in assessing a nation's economic health and capacity.
International Migration: International migration refers to the movement of people across national borders, whether voluntarily or involuntarily, in search of better opportunities, safety, or improved living conditions. This phenomenon has significantly shaped demographics, economies, and cultures around the world, and during significant historical periods, it has influenced societal changes, labor markets, and even geopolitical relations.
Internal Migration: Internal migration refers to the movement of people within a country, as individuals or groups relocate from one region to another. This phenomenon often occurs due to factors such as economic opportunities, environmental changes, and social dynamics. Internal migration plays a crucial role in shaping demographics, urbanization patterns, and cultural exchange within a nation.
Isolationism Policy: The Isolationism Policy refers to a foreign policy approach where a country seeks to minimize its involvement in international affairs and avoid alliances or entanglements with other nations. This policy was particularly prevalent in the United States during the late 19th and early 20th centuries, reflecting a desire to focus on domestic issues and avoid the conflicts that plagued Europe and other parts of the world.
Jet Engines Development: Jet engines development refers to the technological advancements and innovations in the design and production of jet propulsion systems that powered aircraft, particularly during the mid-20th century. This period marked a significant shift in aviation, leading to faster, more efficient, and more reliable aircraft that transformed air travel and military operations.
League of Nations: The League of Nations was an international organization established after World War I to promote peace and cooperation among countries, aimed at preventing future conflicts through collective security and diplomacy. Created by the Treaty of Versailles in 1919, the League sought to address global issues, but it ultimately struggled to maintain authority and effectiveness, especially as tensions rose in the interwar years.
Manufacturing Industry: The manufacturing industry refers to the sector of the economy that produces goods through the transformation of raw materials into finished products using machinery, labor, and processes. This industry has been pivotal in shaping economic growth and development, especially during periods of industrialization and technological advancements.
Marshall Plan: The Marshall Plan was a U.S. initiative launched in 1948 to provide economic assistance to European countries recovering from World War II. It aimed to rebuild war-torn regions, remove trade barriers, and modernize industry, while also curbing the spread of communism in Europe by stabilizing economies and promoting political stability.
Mass Culture Growth: Mass culture growth refers to the widespread adoption of cultural practices, entertainment, and ideas across society, particularly in urban areas during the late 19th and early 20th centuries. This phenomenon was driven by advancements in technology, such as the printing press and later, radio and film, which allowed for the rapid dissemination of cultural products. As people increasingly engaged with mass media, a shared set of cultural references emerged, influencing social norms and behaviors.
Military Power Expansion: Military Power Expansion refers to the increase and enhancement of a nation's military capabilities and influence, often through territorial acquisition, military alliances, or strategic warfare. This concept is crucial in understanding how countries project their power internationally, especially during periods of conflict and competition among nations.
Modern American Liberalism: Modern American Liberalism is a political ideology that emerged in the 20th century, emphasizing social justice, government intervention in the economy, and the protection of civil liberties. This ideology seeks to address social inequalities through progressive taxation, healthcare access, and support for marginalized groups, advocating for both economic and social reforms to create a more equitable society.
National Industrial Recovery Act (NIRA): The National Industrial Recovery Act (NIRA) was a landmark piece of legislation enacted in 1933 as part of President Franklin D. Roosevelt's New Deal aimed at addressing the economic challenges of the Great Depression. It sought to stimulate industrial growth, improve labor conditions, and promote fair competition through the establishment of codes of fair practices for industries. The NIRA played a crucial role in fostering cooperation between businesses and labor while seeking to revitalize the economy during a period of significant hardship.
NATO: The North Atlantic Treaty Organization (NATO) is a military alliance established in 1949, designed for collective defense against aggression and to promote stability in the North Atlantic region. Its creation marked a significant shift in post-World War II diplomacy, reflecting the growing tensions of the Cold War and the need for a united front against potential Soviet expansion.
Philippines Acquisition: The Philippines Acquisition refers to the United States' acquisition of the Philippine Islands from Spain following the Spanish-American War in 1898. This acquisition marked a significant shift in American foreign policy, as the U.S. began to exert its influence beyond its continental borders and into Asia, sparking debates over imperialism and America's role on the global stage.
Popular Culture Debates: Popular Culture Debates refer to discussions and conflicts regarding the influences, values, and representations found in various forms of popular culture, such as music, film, literature, and media. These debates often center around issues like identity, morality, and the impact of media on society, reflecting the changing norms and values of different time periods.
Progressives Coalition: The Progressives Coalition was a diverse group of reform-minded individuals and organizations in the late 19th and early 20th centuries who sought to address the social, political, and economic injustices of the Gilded Age. This coalition included middle-class professionals, labor leaders, women’s suffrage activists, and various reform groups that aimed for government accountability, social welfare programs, and the regulation of monopolies. By uniting various factions with common goals, the Progressives Coalition played a significant role in shaping policies that led to significant reforms in American society.
Puerto Rico Acquisition: The Puerto Rico Acquisition refers to the transfer of control over Puerto Rico from Spain to the United States as a result of the Spanish-American War in 1898. This acquisition marked a significant shift in U.S. foreign policy, as it represented a move towards imperialism and the expansion of American influence in the Caribbean and Latin America.
Radar Development: Radar development refers to the technological advancements in radar systems that emerged primarily during World War II, allowing for the detection and tracking of objects at a distance using radio waves. This innovation transformed military strategies and tactics by providing crucial real-time information about enemy movements and positions.
Russian Revolution: The Russian Revolution refers to a series of events in 1917 that led to the overthrow of the Russian monarchy and the establishment of a communist government under the Bolsheviks. This pivotal moment marked a significant shift in power dynamics, illustrating the broader struggle between autocracy and emerging democratic ideals in a time of social unrest and war.
Scopes Trial: The Scopes Trial, officially known as The State of Tennessee v. John Thomas Scopes, was a landmark legal case in 1925 that debated the legality of teaching evolution in public schools. This trial highlighted the clash between modernist and traditionalist values during the 1920s, reflecting broader societal tensions regarding science, religion, and education in a rapidly changing America.
Social Security Act: The Social Security Act, enacted in 1935, established a system of old-age benefits for workers, unemployment insurance, and aid to dependent mothers and children, the blind, and the disabled. It was a cornerstone of the New Deal, aiming to provide a safety net for Americans during the Great Depression and fundamentally altering the relationship between citizens and the federal government.
Soviet Influence Containment: Soviet Influence Containment refers to the United States' strategic policy aimed at preventing the expansion of Soviet power and communism during the Cold War. This policy was rooted in the belief that if communism could be contained within its existing borders, it would eventually collapse under its internal contradictions. The strategy not only influenced U.S. foreign relations but also shaped domestic policies and the geopolitical landscape of the period.
Spanish-American War: The Spanish-American War was a conflict fought between the United States and Spain in 1898, primarily over issues related to Cuban independence. This war marked a significant turning point for the U.S., as it not only resulted in the liberation of Cuba but also led to the U.S. acquiring territories such as Puerto Rico, Guam, and the Philippines, effectively marking the emergence of America as a global power.
Telephone Technology: Telephone technology refers to the system and devices used for voice communication over distances through electrical signals. This innovation transformed communication by enabling real-time conversations across great distances, fostering connectivity and impacting various aspects of society, including business, politics, and personal relationships.
Transportation Industry: The transportation industry encompasses all businesses and services that move people and goods from one location to another. This sector includes various modes of transport, such as railroads, shipping, air travel, and trucking, which played a pivotal role in economic expansion and the development of infrastructure during significant historical periods.
United Nations: The United Nations (UN) is an international organization founded in 1945, aimed at promoting peace, security, and cooperation among countries around the world. Established in the aftermath of World War II, it seeks to prevent conflicts through diplomacy and collective action, address global issues like human rights and humanitarian aid, and serve as a forum for dialogue among nations.
Urbanization: Urbanization is the process by which an increasing percentage of a population comes to live in urban areas, resulting in the growth and expansion of cities. This phenomenon has been driven by various factors, including economic opportunities, technological advancements, and social changes, significantly impacting societal structures and cultural dynamics.
Workforce Integration: Workforce integration refers to the process of combining diverse groups of workers into a cohesive, collaborative environment, particularly focusing on inclusion across various demographics such as race, gender, and socioeconomic background. This concept emphasizes the importance of harnessing diverse perspectives and experiences to enhance productivity and innovation within organizations, especially during times of social and economic change.
Working Conditions Laws: Working Conditions Laws are regulations established to ensure fair, safe, and healthy environments for workers. These laws evolved in response to the exploitation and dangerous conditions faced by laborers, particularly during the rapid industrialization of the late 19th and early 20th centuries, and aimed to address issues like child labor, long working hours, and unsafe workplaces.
World War I: World War I, also known as the Great War, was a global conflict that lasted from 1914 to 1918, involving many of the world's great powers divided into two opposing alliances: the Allies and the Central Powers. This war fundamentally changed the political landscape of the world, leading to significant social, economic, and geopolitical shifts.
World War I Aftermath: The aftermath of World War I refers to the significant political, social, and economic changes that occurred following the conclusion of the war in 1918. This period was marked by the reshaping of national boundaries, the emergence of new nations, and widespread disillusionment, setting the stage for future conflicts and upheavals in Europe and beyond.
World War II: World War II was a global conflict that lasted from 1939 to 1945, involving the vast majority of the world's nations, including all great powers, eventually forming two opposing military alliances: the Allies and the Axis. This war fundamentally reshaped international relations, economies, and societies worldwide.