Answer:
Correct Answer:
d. None of these answers is correct.
Explanation:
James Buchanan was a prominent lawyer who later became the president of United States of America in 1860's. In America, he is recognized as the least effective president in its history. This is due to his failure to mitigate the national disunity that led to the American Civil War.
Also, as a president, he supported the American supreme court of denying freedom in the Dred Scott case case which is where an Africa-America was suing for his freedom and that of his family. He refused to address the issue of slavery during his presidency.