Industrialization & the Progressive era
The transformation of the US from 1877-1920: industrial consolidation, labor conflict, and the Progressive reform of monopoly, corruption, and the federal state.
The Gilded Age Economy
Between the end of Reconstruction (1877) and World War I, the United States became the world's leading industrial power, surpassing Britain in manufacturing output by 1894. The drivers were railroads, steel, oil, and electricity. The completion of the first transcontinental railroad at Promontory Summit, Utah, on May 10, 1869, knit a national market; by 1900 the rail network exceeded 193,000 miles. Andrew Carnegie applied vertical integration to steel, building Carnegie Steel before selling it to J.P. Morgan in 1901 to form U.S. Steel, the first billion-dollar corporation. John D. Rockefeller's Standard Oil Company (incorporated 1870) achieved horizontal integration, controlling roughly 90 percent of U.S. refining capacity by 1880 through the trust device perfected in 1882.
Capital, Labor, and Immigration
This concentration produced the term 'Gilded Age,' coined by Mark Twain and Charles Dudley Warner in their 1873 novel, implying glitter over rot. Wealth concentrated while industrial labor worked twelve-hour days in dangerous conditions. Organized labor responded: the Knights of Labor peaked near 700,000 members by 1886 before collapsing after the Haymarket affair (Chicago, May 4, 1886). The American Federation of Labor, founded by Samuel Gompers in 1886, pursued 'bread-and-butter' craft unionism. Major confrontations included the Great Railroad Strike of 1877, the Homestead Strike (1892) against Carnegie's Pittsburgh works, and the Pullman Strike (1894), which President Grover Cleveland broke with federal troops and an injunction upheld in In re Debs (1895).
Settlement and the Census of 1890
Simultaneously, some 25 million immigrants arrived between 1870 and 1920, shifting from northern and western Europe toward southern and eastern Europe and processed after 1892 at Ellis Island. The Chinese Exclusion Act of 1882 marked the first federal law barring an immigrant group by nationality. In the West, the Homestead Act (1862) and railroad land grants accelerated settlement; the Superintendent of the Census declared the frontier 'closed' in 1890, the premise of Frederick Jackson Turner's 1893 'frontier thesis.' Native dispossession was codified in the Dawes Severalty Act (1887), which broke up communal tribal lands into individual allotments and stripped roughly two-thirds of Native landholdings by 1934.
The federal response to monopoly began with the Interstate Commerce Act (1887), creating the Interstate Commerce Commission to regulate railroads, and the Sherman Antitrust Act (1890), which outlawed combinations 'in restraint of trade.' Both were initially weak: the Supreme Court in United States v. E.C. Knight Co. (1895) held that manufacturing was not interstate commerce, gutting early antitrust enforcement. The legal and political machinery to discipline industrial capitalism would be built in the Progressive era that followed.