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 first American labor unions dated from before 1800. The first was founded in 1794 in Philadelphia, by a group of shoemakers and called the Federal Society of Journeymen Co â¦ rdwainers (shoemakers). Workmen's Associations became the backbone of Andrew Jackson's supporters.he trade unions were created to protect the workers and were not exclusive of any particular kind of worker. The first trade union in the US was the National Labor Union, founded in 1866. It failed and was soon replaced by the Knights of Labor, 1869.