As millions of young men left their factory jobs to fight overseas, who stepped in to replace men so that factories could continue to produce war materials?

women.

sorry don't really want to offend people

i honesty don't know, good luck tho dawg

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.