| 1909-08-05 | Payne-Aldrich Tariff Betrays Progressive Promises: Taft Praises "Best Tariff Bill," Splits Republican Party
4 src William Howard Taft |
| confirmed |
| 1909-03-04 | Roosevelt Leaves Office After 44 Antitrust Suits, Revealing Progressive Era Reform Limits
3 src Theodore Roosevelt · William Howard Taft · J.P. Morgan · U.S. Department of Justice · +1 |
| confirmed |
| 1908-07-26 | Bonaparte Creates Bureau of Investigation Inside DOJ, Bypassing Congressional Opposition
3 src Theodore Roosevelt · Department of Justice · Bureau of Investigation | | confirmed |
| 1908-02-24 | Muller v. Oregon: Brandeis Brief Upholds Women's Labor Protections Using Paternalistic Reasoning
3 src Supreme Court of the United States · Louis Brandeis | | confirmed |
| 1908-02-03 | Supreme Court Loewe v. Lawlor Decision Holds Union Members Personally Liable for Damages
3 src U.S. Supreme Court · American Federation of Labor |
| confirmed |
| 1908-01-27 | Adair v. United States: Supreme Court Strikes Down Federal Ban on Yellow-Dog Contracts
3 src Supreme Court of the United States |
| confirmed |
| 1907-11-02 | Roosevelt Approves U.S. Steel Acquisition of Tennessee Coal & Iron During Panic, Exposing Reform Limits
3 src Theodore Roosevelt · J.P. Morgan · Henry Clay Frick · U.S. Steel Corporation | | confirmed |
| 1907-07-19 | Roosevelt Justice Department Files Antitrust Suit Against American Tobacco Trust
3 src Theodore Roosevelt · U.S. Department of Justice · American Tobacco Company |
| confirmed |
| 1906-06-30 | Roosevelt Signs Pure Food and Drug Act and Meat Inspection Act
3 src Theodore Roosevelt · U.S. Congress | | confirmed |
| 1906-06-29 | Roosevelt Signs Hepburn Act Creating First True Federal Regulatory Agency
4 src Theodore Roosevelt · Interstate Commerce Commission · Railroad companies · U.S. Congress | | confirmed |
| 1906-02-26 | Upton Sinclair Publishes "The Jungle" Exposing Meatpacking Industry Horrors
3 src | | confirmed |
| 1905-06-27 | Industrial Workers of the World Founded, Challenges AFL Craft Unionism
3 src Eugene V. Debs · Western Federation of Miners | | confirmed |
| 1905-04-17 | Supreme Court Strikes Down Labor Protections in Lochner v. New York
3 src U.S. Supreme Court · Oliver Wendell Holmes Jr. |
| confirmed |
| 1905-01-30 | Supreme Court Rules Against Beef Trust, Establishes Stream of Commerce Doctrine
3 src U.S. Supreme Court · Theodore Roosevelt · Attorney General Philander Knox |
| confirmed |
| 1904-03-14 | Supreme Court Orders Northern Securities Dissolution in First Major Antitrust Victory
5 src U.S. Supreme Court · Theodore Roosevelt · J.P. Morgan · James J. Hill · +2 |
| confirmed |
| 1904-01-01 | Lincoln Steffens Publishes "The Shame of the Cities" Exposing Municipal Corruption
3 src | | confirmed |
| 1903-10-29 | Anaconda Copper Shuts Down All Montana Operations to Force Legislative Changes
3 src Anaconda Copper Mining Company |
| confirmed |
| 1903-04-27 | Giles v. Harris: Supreme Court Refuses to Enforce Black Voting Rights Against Alabama Constitution
3 src U.S. Supreme Court · Oliver Wendell Holmes Jr. · Alabama Legislature |
| confirmed |
| 1903-02-19 | Roosevelt Signs Elkins Act Prohibiting Railroad Rebates and Price Discrimination
3 src Theodore Roosevelt · Interstate Commerce Commission · Railroad companies | | confirmed |
| 1903-02-14 | Roosevelt Creates Bureau of Corporations and Department of Commerce and Labor
3 src Theodore Roosevelt · U.S. Congress | | confirmed |
| 1902-11-01 | Ida Tarbell Begins "The History of the Standard Oil Company" in McClure's Magazine
3 src Standard Oil Company · John D. Rockefeller | | confirmed |
| 1902-10-03 | Roosevelt Intervenes in Coal Strike as Neutral Arbitrator, Origins of Square Deal
3 src Theodore Roosevelt · John Mitchell · J.P. Morgan · Elihu Root | | confirmed |
| 1902-05-12 | Anthracite Coal Strike Begins in Pennsylvania, 147,000 Miners Walk Out
3 src United Mine Workers · John Mitchell · Theodore Roosevelt · Railroad companies | | confirmed |
| 1902-05-01 | Justice Department Files Antitrust Suit Against Beef Trust Monopoly
3 src Theodore Roosevelt · Attorney General Philander Knox | | confirmed |
| 1902-02-19 | Roosevelt Announces Northern Securities Antitrust Suit Against J.P. Morgan Railroad Trust
3 src Theodore Roosevelt · Attorney General Philander Knox · J.P. Morgan · James J. Hill · +2 | | confirmed |
| 1902-01-01 | Water Cure Torture Scandal - Senate Investigation Exposes Systematic Abuse
3 src Theodore Roosevelt · William Howard Taft | | confirmed |
| 1901-09-28 | Balangiga Massacre Triggers Samar Pacification - Scorched Earth Retaliation
3 src Theodore Roosevelt | | confirmed |
| 1901-05-21 | Alabama Constitutional Convention: White Supremacy Constitution Becomes Blueprint for Southern Disenfranchisement
3 src Alabama Legislature · Democratic Party |
| confirmed |
| 1901-03-10 | Carnegie Sells to J.P. Morgan: U.S. Steel Becomes First Billion-Dollar Corporation
3 src Andrew Carnegie · J.P. Morgan · U.S. Steel Corporation |
| confirmed |
| 1901-03-02 | Platt Amendment Enacted - Cuba Becomes U.S. Protectorate
3 src William McKinley · Elihu Root | | confirmed |
| 1901-03-01 | J.P. Morgan Creates Northern Securities: $400 Million Railroad Monopoly
3 src J.P. Morgan · James J. Hill · Edward H. Harriman · Northern Securities Company · +1 |
| confirmed |
| 1901-02-26 | U.S. Steel Formation - Morgan Creates First Billion-Dollar Trust
3 src J.P. Morgan · Andrew Carnegie · Charles Schwab · John D. Rockefeller | | confirmed |
| 1901-02-25 | U.S. Steel Corporation Formed - First Billion-Dollar Corporation in History
4 src J.P. Morgan · Andrew Carnegie · Charles Schwab · U.S. Steel Corporation · +1 | | confirmed |
| 1900-06-20 | Boxer Rebellion - Eight-Nation Alliance Invasion Enforces Imperial Control
3 src William McKinley | | confirmed |