I think the answer is letter a. David Wilmot.
It is because Wilmot was known as the instrument in establishing the Republican Party in Pennsylvania and a driving force in the formation of the Republican Party.
The correct answer is C.
In 1867, the political battle between President Johnson and Congress over southern Reconstruction came to a confrontation. And 1877 Congress passed Electoral Count Act Hayes became president Hayes removed remaining troops from the South to end Reconstruction. The Republicans promised that if Hayes was elected, he would withdraw the last of the federal troops from the south, allowing the only remaining Republican Reconstruction governments to collapse.
An argument can be made for both decades as having a greater impact on the development of US society. Viewing both decades in comparison to US society in 2017, it could be said that the 1920s was more impactful, in the sense that the US in 2017 looks a lot more like 1927 than 1937.
In the 1920s, the country was a war-weary nation that was in the process of turning inward, figuring out its identity following a costly war which didn't directly affect Americans. The result was the election of a questionably qualified Republican president who said that a return to normalcy, to the America of old, was what the nation needed. He pursued heavier tariffs and policies that would withdraw America from the world stage.
The nation was enjoying a soaring stock market setting all time records on a near daily basis. There was a great deal of inequality, and in the absence of a cohesive national vision/identity, people turned to false idols of status, partying, and conspicuous opulence to find meaning and fulfillment. Many illegal drugs, such as marijuana and alcohol at the time, were consumed openly and in large quantities despite their illegality.
Everything written above could be said of the United States in 2017. Let's hope that the parallels do not continue into the 9th year of the decade, when an epic stock market crash led to over a decade of economic disaster in the United States.
The answer is b
The world should support the protesters