In the system of mass production, unskilled workers were hired to tend to machines and were paid more than skilled workers.
were hired to help skilled workers and were paid more than skilled workers.
were hired to tend to machines and were paid less than skilled workers.
were hired to assist skilled workers and were paid the same as skilled workers.

i can

explanation:

the most famous of all the units fighting in cuba, the "rough riders" was the name given to the first u.s. volunteer cavalry under the leadership of theodore roosevelt. roosevelt resigned his position as assistant secretary of the navy in may 1898 to join the volunteer cavalry. the original plan for this unit called for filling it with men from the indian territory, new mexico, arizona, and oklahoma. however, once roosevelt joined the group, it quickly became the place for a mix of troops ranging from ivy league athletes to glee-club singers to texas rangers and indians.

this is a good question! i'll do some research and come back when i have the answer!