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The Transcontinental Railroad innovation had the GREATEST impact on westward migration immediately after the American Civil War.
After the Civil War, there was great interest and opportunity with westward expansion. With the invention of the railroad, the transport of goods and people became quicker and less expensive than ever before.
A social status does have an inflence in health care as the wealthy americans receive adequate medical care than the poor ones.
<h3>What is a
social status?</h3>
This mean the rank than an individual holds in a social hierarchy based upon honour or prestige.
Generally, the wealthy americans receive adequate medical care than the poor ones because of their social status in the society.
Therefore, the Option A is correct.
Read more about social status
<em>brainly.com/question/17301617</em>