The correct answer is A. Technological advances such as s<em>team power, air brakes, automatica lubricators and steel tracks</em> have affected the railroads very positively, since it has made it possible that the rail network could become a safer, more efficient and more reliable means of transportation for goods.
Answer:
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Some other occupations was Black smiths , shoe makers and basket makers.
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African Americans couldn't get education and if they did the budget was really low
Lead expeditions to make the area. Made transportation a lot easier by expanding railroads out west. Created roads for easier travel. Established courts and government buildings. Sent the armed forces to make sure everything was safe. The question is vague so I kind of have to give you a vague answer.
