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 Federation of Organized Trades and Labor Unions began in 1881 under the leadership of Samuel Gompers. Like the National Labor Union, it was a federation of different unions and did not directly enroll workers.n 1912 the IWW organized a strike of more than twenty thousand textile workers, and by 1917 the Agricultural Workers Organization (AWO) of the IWW claimed a hundred thousand itinerant farm workers in the heartland of North America.