I guessing it’s gotta be geography
Answer:
Explanation:
Unlike Western Europe, where the Catholic Church maintained some degree of independence from political authorities, in Byzantium the emperor assumed something of the role of both "Caesar," as head of state, and the pope, as head of the Church.
they were already unreachable but archers helped too
Explanation:
In order to prevent an enemy getting over the wall the castle builders selected their site with great care so that the terrain would be difficult for a belfry to cross. They then made it more difficult by digging a ditch or moat around the curtain walls in order to prevent the towers getting close to the battlements. yet archers played a great role in middle ages by defended castles and kingdoms from top while infantry troops fought.
The answer to your question is the American Anti-Slavery Society