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For most of the late nineteenth century, the industry was the major contributor to American economic development.
was the prolific late nineteenth century inventor of the electric light bulb, also known as the "Wizard of Menlo Park."
Railroads rewarded large shippers who used their lines by giving them secret discounts on their (and sometimes their competitors') shipments.
Pittsburgh's , a self-made millionaire, dominated the late nineteenth-century steel industry
By the middle of the 1880s, John D. Rockefeller had nearly monopolized the industry in America.
, author of Progress and Poverty, advocated a single tax on land as a solution to the maldistribution of wealth in America.
In 1867, a Department of Agriculture official, , who tried to socialize the usually isolated life of America's farmers, founded the National Grange of the Patrons of Husbandry.
Most of the so-called laws attempted to regulate railroad rates to the benefit of America's farmers.
In 1887, Congress created the , America's first regulatory agency, to police the affairs of the nation's railroads.
In 1890, Congress passed the Act to try to outlaw corporations that formed "combinations in restraint of [interstate] trade."
The was the first American national labor union to welcome blacks, immigrants, and women into membership.
A riot resulted when a bomb was thrown at police when they tried to break up a workers protest meeting at Square in Chicago in 1886.
was the leader of the American Railway Union during the 1894 Pullman Strike
George Westinghouse's invention of the in 1869 made it possible to increase greatly the speed, size, and safety of trains.
Samuel Gompers was the leader of the , late nineteenth century America's most successful "bread and butter" trade union.
Before the invention of the gasoline engine and the automobile, the most important product of America's petroleum industry was which was burned in lamps.
