Immigrants from southern and eastern Europe who formed a recognizable wave of immigration from the 1880s until 1924, in contrast to the immigrants from western Europe who had come before them. These new immigrants congregated in ethnic urban neighborhoods, where they worried many native-born Americans, some of whom responded with nativist anti-immigrant campaigns and others of whom introduced urban reforms to help the immigrants assimilate.

The system that allotted land with designated boundaries to Native American tribes in the west, beginning in the 1850s and ending with the Dawes Severalty Act of 1887. Within these reservations, most land was used communally, rather than owned individually. The U.S. government encouraged and sometimes violently coerced Native Americans to stay on these at all times.

A foreign policy of Secretary of State James G. Blaine aimed at rallying Latin American nations behind American leadership and opening Latin American markets to Yankee traders. The policy bore fruit in 1889, when Blaine presided over the First International Conference of American States.

A reform movement led by Protestant ministers who used religious doctrine to demand better housing and living conditions for the urban poor. Popular at the turn of the twentieth century, it was closely linked to the settlement house movement, which brought middle-class, Anglo-American service volunteers into contact with immigrants and working people.

This tariff provided for a substantial reduction of rates and enacted an unprecedented, graduated federal income tax. By 1917, revenue from the income tax surpassed receipts from the tariff, a gap that has since been vastly widened.

An organization founded in 1890 to demand the vote for women. they argued that women should be allowed to vote because their responsibilities in the home and family made them indispensable in the public decision-making process. During World War I, they supported the war effort and lauded women's role in the Allied victory, which helped to finally achieve nationwide woman suffrage in the Nineteenth Amendment.

The development of engine-driven machines, like the combine, which helped to dramatically increase the productivity of land in the 1870s and 1880s. This process contributed to the consolidation of agricultural business that drove many family farms out of existence.

A proviso to President William McKinley's war plans that proclaimed to the world that when the United States had overthrown Spanish misrule, it would give Cuba its freedom. The amendment testified to the ostensibly "anti-imperialist" designs of the initial war plans.

Bright young reporters at the turn of the twentieth century who won this unfavorable moniker from Theodore Roosevelt, but boosted the circulations of their magazines by writing exposés of widespread corruption in American society. Their subjects included business manipulation of government, white slavers, child labor, and the illegal deeds of the trusts, and helped spur the passage of reform legislation.

German submarines, named for the German Unterseeboot, or "undersea boat," proved deadly for Allied ships in the war zone. These attacks played an important role in drawing the United States into the war.

Mid-nineteenth-century movement in European and American literature and the arts that sought to depict contemporary life and society as it actually was, in all its unvarnished detail. Adherents eschewed the idealism and nostalgia of the earlier romantic sensibility.

Officially known as the People's party, these people represented Westerners and Southerners who believed that U.S. economic policy inappropriately favored Eastern businessmen instead of the nation's farmers. Their proposals included nationalizing the railroads, creating a graduated income tax, and most significantly the unlimited coinage of silver.

A diverse group formed in order to protest American colonial oversight in the Philippines. It included university presidents, industrialists, clergymen, and labor leaders. Strongest in the Northeast, the Anti-imperialist League was the largest lobbying organization on a U.S. foreign-policy issue until the end of the nineteenth century. It declined in strength after the United States signed the Treaty of Paris (which approved the annexation of the Philippines), and especially after hostilities broke out between Filipino nationalists and American forces.

A setback for labor reformers, this Supreme Court decision invalidated a state law establishing a ten-hour day for bakers. It held that the "right to free contract" was implicit in the due process clause of the Fourteenth Amendment.

The movement of 6 million African Americans from the rural South to the urban North and West in two major waves. The first, from World War I until the onset of the Great Depression, brought more than 1.5 million migrants to northern cities. From 1940 to 1970, another 5 million left the South, pushed off the land by the mechanization of cotton farming and lured north and west by hopes for greater economic opportunity and more equitable political participation.

A scandal-mongering practice of journalism that emerged in New York during the Gilded Age out of the circulation battles between Joseph Pulitzer's New York World and William Randolph Hearst's New York Journal. The expression has remained a pejorative term referring to sensationalist journalism practiced with unethical, unprofessional standards.

A strike by railroad workers upset by drastic wage cuts. The strike was led by socialist Eugene Debs but not supported by the American Federation of Labor. Eventually President Grover Cleveland intervened, and federal troops forced an end to the strike. The strike highlighted both divisions within labor and the government's new willingness to use armed force to combat work stoppages.

An uprising in China directed against foreign influence. It was suppressed by an international force of some eighteen thousand soldiers, including several thousand Americans. This paved the way for the revolution of 1911, which led to the establishment of the Republic of China in 1912.

Platform of reforms advocated by Woodrow Wilson in his first presidential campaign, including stronger antitrust legislation to protect small business enterprises from monopolies, banking reform, and tariff reductions. Wilson's strategy involved taking action to increase opportunities for capitalist competition rather than increasing government regulation of large trusts.

Woodrow Wilson's proposal to ensure peace after World War I, calling for an end to secret treaties, widespread arms reduction, national self-determination, and a new league of nations.

Americans saw this world's fair, held in Chicago, as their opportunity to claim a place among the world's most "civilized" societies, by which they meant the countries of western Europe. The fair honored art, architecture, and science, and its promoters built a mini-city in which to host the fair that reflected all the ideals of city planning popular at the time. For many, this was the high point of the City Beautiful movement.

A term scholars have used to describe national politics from 1896-1932, when Republicans had a tight grip on the White House and issues like industrial regulation and labor concerns became paramount, replacing older concerns like civil service reform and monetary policy.

A brazen policy of "preventive intervention" advocated by Theodore Roosevelt in his Annual Message to Congress in 1904. Adding ballast to the Monroe Doctrine, his corollary stipulated that the United States would retain a right to intervene in the domestic affairs of Latin American nations in order to restore military and financial order.

State-interventionist reform program devised by journalist Herbert Croly and advocated by Theodore Roosevelt during his Bull Moose presidential campaign. Roosevelt did not object to continued consolidation of trusts and labor unions. Rather, he sought to create stronger regulatory agencies to insure that they operated to serve the public interest, not just private gain.

Led by Senators William Borah of Idaho and Hiram Johnson of California, this was a hard-core group of militant isolationists who opposed the Wilsonian dream of international cooperation in the League of Nations after World War I. Their efforts played an important part in preventing American participation in the international organization.