Labor union organization focused on organizing industrial workers.

• A. American Federation of Labor (AFL)
• B. National Labor Relations Board (NLRB)
• C. IWW
• D. Congress of Industrial Organizations (CIO)

Answer: (D)

Industrial unionism centers on uniting workers across an entire industry, not just within a single craft. The Congress of Industrial Organizations was formed in the 1930s specifically to organize unskilled and semi-skilled workers within whole industries—steel, auto, rubber, textiles, and so on—creating industrial unions that cut across individual trades. This approach contrasted with the AFL’s craft-based unions, which grouped workers by skilled trade rather than by industry. The NLRB is a government agency, not a union, and the IWW pursued broad, sometimes radical, unionism across industries but stood apart from the mainstream CIO/AFL split. So the organization best described as focused on organizing industrial workers is the CIO.