Benedict created a set of rule for monks in the Roman Empire, while Basil created a set of rules for monks in the Byzantine Empire. Option A is correct.
The Roman Empire was the post-Roman Republic period of the ancient Roman civilization. Meanwhile, the Byzantine Empire was the continuation of the Roman Empire in its eastern provinces during Late Antiquity and the Middle Ages. Its capital city was Constantinople.
The Americans were huge areas of fertile land, and the European powers needed people to work on its fields. African slaves were a cheap and abundant solution.
After WWI and during the Great Depression the US tried to be an Isolationist nation. They put out tariffs so people would buy US (forgetting that the rest of the world was still devastated by WWI (economies included)).