Unskilled workers: Unskilled workers are individuals who lack specialized training or expertise in a specific area and perform tasks that require minimal training.
Craft unions: Craft unions were labor organizations formed by skilled tradespeople (such as carpenters or blacksmiths) who shared common skills and interests.
American Federation of Labor (AFL): The AFL was a prominent labor federation established in the late 19th century that primarily focused on organizing skilled trade unions.