The correct answer is the letter C)They had trained and rehearsed for the mission.
The Battle of Crater, at the first moment, was led by Burnside who accepted the division of African American troops into his formation. Though these troops had spent most of their service guarding wagon trains and building fortifications, Burnside believed their enthusiasm would compensate for their lack of combat experience. Also, each brigade in Ferrero’s division trained for its role in Burnside’s carefully choreographed scheme. However, one day before the action, Burnside’s superior, Maj. Gen. George Meade, ordered Burnside to select a white unit instead, saying he did not want to be blamed for a “massacre” of colored troops. This way, untrained and ill-prepared, Ledlie’s men led one of the Civil War’s most calamitous attacks.
The Romans were not content with conquering land near to them. They realised that land further away might also have riches in them that would make Rome even more wealthy. Hence their drive to conquer Western Europe.