The document summarizes key events in the U.S. labor movement between 1830 and 1940. It describes the founding of early labor organizations like the National Labor Union in 1866 and the American Federation of Labor in 1886. Major strikes and events are noted, such as the Great Railroad Strike of 1877, the Pullman Strike of 1894, and the Triangle Shirtwaist Factory fire in 1911. The period from the 1920s to 1940s saw the rise of the CIO, passage of the National Labor Relations Act and Fair Labor Standards Act, and significant union victories like the Flint Sit-Down Strike of 1937.