Answer:
Kept in its original Latin, so only priests and scholars could read it is the correct answer.
Explanation:
The correct answer to the question above would be the last option, "in multiple countries all over the world." Terrorist attacks by fundamentalist groups have occurred in multiple countries all over the world. They have been doing recent terrorist attacks, one in Paris last year and Syria.
The "United Nations" would be the best list in terms of an organization dedicated to keeping the peace and protecting human rights, but it should be noted that the International Monetary Fund does a little bit if this in its own way as well.
"De facto" means "in fact, factually" - that something is, indeed, taking place. It is customarily used to denote a situation which is not dictated by law ("de jure") but which happens anyway - so the best answer is A. Law - this segregation is not required by law, but it takes place anyway, for example for financial reasons.
The Appilachian mountains was the greatest barrier, because it was crawling with Indian's that may have made them turn back.