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.
The American Federation of Labor was one of the first federations of labor unions in the United States wich was founded in Columbus, Ohio. In 1881 the Federation of Trades and â¦ Labor Unions was founded.Five years later the organization changed its name to the American Federation of Labor.he American Federation of Labor was one of the first federations of labor unions in the United States wich was founded in Columbus, Ohio. In 1881 the Federation of Trades and â¦ Labor Unions was founded.