A.D means in our time (Anno Domini, the year of our lord) and B.C means Before Christ - these two and the other mentioned words are used to B. refer to periods of time.
Answer: Pearl harbor attack was so damaging because the Americans believed the Japanese lacked the capacity to host such an attack.
Americans believed that the Japanese would attack the Philippines, south east Asia, or the Soviet Union, thus unpredicted.
Hope this helps^^
Had to look for the missing details and here is my answer.
Based on the image attached, how the Reconstruction Amendments helped in explaining the status of men is that "the 14th Amendment granted the men citizenship, making it possible for them to run for office, while the 15th Amendment allowed African American men to vote for their representative." This answer is based on the actual options posted. Hope this helps.
Discrimination, going through the civil war, fighting for their rights, hate, the disagreement, the constant want to give up but trying to keep going