Final answer:
During the 1920s, coal, textiles, and mining industries faced significant challenges, including competition and low wages.
Explanation:
The industries that were struggling in the 1920s included coal, textiles, and mining. Textile manufacturers faced competition from southern mills paying low wages and implementing techniques like the stretch-out. Mining and lumbering industries also faced challenges during this time.
Learn more about Struggling Industries in the 1920s here:
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