1910 - Electrical current for domestic residencies becomes standardized. Electrical appliance prices fall markedly over the next 20 years.
1910 - Over 181,000 passenger cars are sold in America.
1910 - US cigarette production and consumption overtakes cigars for the first time.
1910 - John Wanamaker opens a twelve-story department store in Philadelphia, the most monumental commercial structure in the world at the time.
1910 - $600 million is spent on advertising by big business; this represents 4% of the national income.
1910 - The National Negro Committee becomes the National Association for the Advancement of Colored People (NAACP).
1910 - The tango, sweeping Europe with its South American flavor, begins to catch on in New York City ballrooms.
1911 - American Tobacco Company controls 92% of world's tobacco business.
1911 - Antitrust action against the American Tobacco Company breaks it into several major companies: American Tobacco Company, R. J. Reynolds, Liggett & Meyers Tobacco Company, Lorillard, and British American Tobacco.
1911 - Air conditioning is invented.
1911 - The Supreme Court rules that Standard Oil Company of New Jersey must be dissolved under antitrust laws.
1911 - The Taft administration files a suit against the United States Steel Company under the Sherman Antitrust Act, in spite of Theodore Roosevelt's earlier pledge to J.P. Morgan that such a suit would not be brought.
1911 - A fire sweeps through the Triangle Shirtwaist Factory in lower Manhattan, killing 145 workers, most of them young girls. The factory's owners are indicted for manslaughter due to unsafe working conditions.
1911 - A new macadam track at the Indianapolis Speedway is inaugurated with a five-hundred-mile race, the first Indianapolis 500.
1911 - The New York City Association of Advertising Agencies is formed.
1912 - Liggett & Myers introduces Chesterfield brand cigarettes with the slogan "They do satisfy."
1912 - The Titanic sinks on its maiden voyage, killing 1,518 passengers and crew.
1912 - Crowds swarm New York's Times Square to see the World Series score on the new electric bulletin board of the New York Times.
1913 - The REO car company sells the 'Reo the Fifth' for $1,095. The top, windshield, lighting and starting systems are all optional.
1913 - Camel cigarettes are first marketed by R. J. Reynolds.
1913 - The New York World publishes the first crossword puzzle.
1913 - The Federal Reserve System is created. All national banks are required to join the system.
1913 - The Woolworth Building opens in New York City, at a height of 792 feet.
1913 - The Sixteenth Amendment, giving Congress the power to tax personal incomes without apportionment among the states, is adopted.
1913 - Henry Ford opens the first moving assembly line for cars in Highland Park, Michigan. It can produce a Model T in three hours.
1914 - Hollywood, California, becomes the center of motion picture production in the US when filmmaker Cecil B. DeMille establishes his studio there, and other producers follow.
1914 - Henry Ford announces he will pay his employees a minimum of five dollars a day and inaugurate three eight-hour shifts. But to qualify for the new wage, workers must answer questions about their home lives and habits from Ford's new Sociological Department.
1914 - Congress passes a resolution to celebrate Mother's Day on the second Sunday in May.
1914 - The Federal Trade Commission is established.
1914 - The Panama Canal is officially opened.
1914 - The first full-length feature comedy motion picture, Tillie's Punctured Romance, stars Marie Dresser, Mabel Normand, and newcomer Charlie Chaplin.
1910s - There is a phenomenal growth in the retail industry, mirroring the vast increase in mass production.
1910s - Millions of dollars are spent by companies on advertising and public relations to stimulate consumer buying.
1910s - Women begin to wield power in labor unions, especially in the garment industry.
1910s - Modern market research begins. As a result, ads become increasingly targeted to specific audiences.