A semitone, also called a half step or a half tone, is the smallest musical interval commonly used in Western tonal music, and it is considered the most dissonant when sounded harmonically. It is defined as the interval between two adjacent notes in a 12-tone scale (e.g. from C to C â¯).
The National Labor Union. The first large-scale U.S. union was the National Labor Union, founded in 1866 to organize skilled and unskilled laborers, farmers, and factory workers.
SELECTED TIMELINE OF WOMEN'S LABOR HISTORY DATE. In Pawtucket, Rhode Island, 102 female workers go on strike to support their fellow (male) weavers. These women, who. protested wage reduction and long hours, stage the first factory workers strike in the U.S. 1824. The first women-only union is formed: The United Tailoresses of New York.