Examples of trade unions?

1. United Auto Workers (UAW)
2. Service Employees International Union (SEIU)
3. American Federation of Teachers (AFT)
4. United Steelworkers (USW)
5. International Brotherhood of Teamsters (IBT)
6. Communication Workers of America (CWA)
7. United Food and Commercial Workers (UFCW)
8. American Federation of State, County and Municipal Employees (AFSCME)
9. International Association of Machinists and Aerospace Workers (IAM)
10. United Mine Workers of America (UMWA)