Answer:
The racial violence used against the African American during these events raised the need to relook at the civil rights amendments.
Explanation:
The Colfax massacre refers to racial bloodshed in the American society in 1873 where a confrontation of a black militia and white extremist groups claimed the lives of around 150 blacks after they surrendered. Memphis Massacre is another example of the racial violence on the American soil in which the lives of 46 blacks and 2 white inhabitants of the region of Memphis was lost. These incidents raised concern over the safeguarding of the African Americans and the laws made for their protection.
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Elasticity is a measure of variables sensitivity to a change in another variable, refers the degree to which individuals, consumers, or producers change their demand of the amount supplied in response to price or income changes.