| A | B |
|---|
| 1877 | Rutherford B. Hayes becomes president; end of Reconstruction |
| 1879 | Thomas Edison invents the light bulb |
| 1880 | James A. Garfield elected president |
| 1881 | Garfield assassinated; Chester A. Arthur becomes president |
| 1883 | Pendleton Civil Service Act |
| 1884 | Grover Cleveland elected president |
| 1886 | Haymarket Riot in Chicago |
| 1886 | American Federation of Labor founded by Samuel Gompers |
| 1887 | Interstate Commerce Act |
| 1887 | Dawes Act |
| 1888 | Benjamin Harrison elected president |
| 1890 | Battle of Wounded Knee; closing of the frontier |
| 1890 | Sherman Antitrust Act |
| 1892 | Homestead Steel Strike |
| 1892 | Grover Cleveland elected president |
| 1890 | Panic of 1893 |
| 1894 | Eugene V. Debs leads Pullman Strike |
| 1896 | William McKinley elected president |
| 1898 | Spanish-American War |
| 1899 | Open Door policy with China announced |
| 1901 | McKinley assassinated; Theodore Roosevelt becomes president |
| 1904 | Roosevelt Corollary to the Monroe Doctrine |
| 1906 | Hepburn Act |
| 1906 | Pure Food and Drug Act |
| 1906 | Meat Inspection Act |
| 1908 | William Howard Taft elected president |
| 1909 | Payne-Aldrich Tariff |
| 1912 | Woodrow Wilson elected presidetn |
| 1913 | Underwood Tariff |
| 1913 | Federal Reserve Act |
| 1913 | 16th and 17th Amendments ratified` |
| 1914 | Federal Trade Commission established |
| 1914 | Clayton Antitrust Act |
| 1914 | Panama Canal opens |
| 1914 | World War I begins in Europe |
