6. what efforts were made in 1861 to prevent the outbreak of war?

There was no real efforts made, but President Lincoln did prosecute the war and fight for the 13th amendment which abolished slavery.

B. the glory of Rome before the Great Depression

Explanation:

Benito Mussolini and Hitler both had mostly the same goals so it wouldn't be "A" AND NO WAY Benito Mussolini WOULD GIVE UP HIS POWER so the answer is "B". Benito Mussolini imagined recreating the Roman Empire like the king of the Holy Roman Empire and none of them succeeded.