In the mid-1800s, steam power was replaced by .

answer; ///(1) blank; henry clay; (2) blank; secretary of state; (c)is your answer; ///good luck

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.