Who is the commander in chief of the armed forces? a. secretary of defense b. president pro tem c. army chief of staff d. president of the united states

D. President of the United States

Explanation:

The framers of our Constitution saw to it that the United States armed forces (military) are under civilian control. The commander in chief of the armed forces is the president of the United States, not a member of the military.

the american rail road was the most influential and useful transportation system developed in the 1800's with steam locomotives and in the very late 1800's and early 1900's diesel electric locomotives being used to transport goods and people around the newly expanded united states!

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explanation: