Tensile strength is defined as a stress, which is measured as force per unit area. For some non-homogeneous materials (or for assembled components) it can be reported just as a force or as a force per unit width.
Answer Wiki. The practice of organizing to aggregate individuals' influence for economic reasons probably began with European craft guilds, although the master craftsmen were actually employers and capitalists. Trade unions or labor unions originated in England in the 1700s, but were outlawed until the 1800s.
Labor Unions in Canada, organizations that represent Canadian workers in their negotiations with employers. Labor unions engage in collective bargaining with employers to determine issues such as wages, the terms and conditions of work, and worker security.n the late 20th century other types of unions arose in Canada. Public-sector unions emerged in the 1960s after the government passed laws allowing government workers to organize (to form groups to protect their rights and interests) and bargain collectively.