Answer:
One of the major ways in which innovations in manufacturing led to improvements in transportation is that it allowed for the construction of the transcontinental railroad, which greatly increased the quality of life for most Americans.
Explanation:
Answer:
Profession is the means to earn a living. You adopt a profession of your choice and then earn your livelihood around it. Training is required for you to succeed in any profession. You have to sharpen your skills and alert yourself to do your tasks correctly.
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The answer is A and B are helped.