<span>A. separation of church and state
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Answer: The war was most defiantly worth it even if the lives of many were lost because the foundations of america were made from that specific war because it abolished slavery and preserved the Union/North. Which today is known as the Republican Party.
The three reasons why Reconstruction failed to live up to its potential are:
1. There was a lack of unity in national government. This is because, Reconstruction happened after Americans' Civil War and some of the people in the government didn't like the idea of establishing this which caused the failures of bring the South America into the country, revive the economy and rebuild the broken landscape.
2. Not enough of the freedmen wanted to become free. Although Reconstruction wanted to infuse the freed slaves into the society, it did not successfully established. This was due to the rise of American organizations that made them feel insecure.
3. America could not overcome the issue of racism.
C. is the answer. Also thanks, because I just gained a rank!