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Thomas Edison

was the most versatile inventor of his age and best known for his electric light bulb

Samuel Gompers

founded the American Federation of Labor and demanded a fairer share for labor: better wages, hours, and working conditions

John D. Rockefeller

one of the first millionaires of his time; formed Standard Oil and dominated weaker competitors by using methods of horizontal integration

Haymarket Square Riot

a bomb was thrown during a protest, which forever associated the Knights of Labor with anarchists and lowered their popularity and effectiveness

Knights of Labor

one of the first labor unions which won a number of strikes for the eight-hour work day, but then became involved in a number of May Day strikes, such as the Haymarket square riot, which weakened it

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