Which statement is true about the new automatic weapons used during world war i? a. they were in short supply and needed to be shared with the allied forces. b. they made it almost impossible to cross land defended by entrenched troops. c. they caused fewer casualties because they often failed to operate correctly. d. they were primarily used when going door to door in villages and cities.

answer; /// i believe that the correct answer is (b)///they gained vast amounts of

answer: sorry but maybe take a pic of the map so nobody's confused

explanation:

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.