A. Nations to meet and settle serious international issues peacefully.
As Lincoln debated what to do with Reconstruction, he wanted to make sure he stayed in line with "<span>1. The constitution," since Lincoln, unlike the Radical Republicans, wanted the nation to "heal" as quickly as possible instead of punishing the South. </span>
Well..as far as i learned from my knowledge the answer would be in the past, the military and the FBI have prevented a number of terrorist attacks.
Secondly, wasn't there suppose to be an option answers for your question ?
Himalaya Mountains is the answer
They lacked knowledge about the land and how to use their environment to survive.