(1) What were the problems besetting the Church in the tenth and eleventh centuries? What was “moderate reform”?
In the tenth and eleventh centuries, the Church was plagued by three primary issues that ruined its spiritual authority. The first problem was simony; the buying and selling of offices, where wealthy families would often purchase bishoprics or abbacies to ensure their children held power. The second problem was lay investiture; the practice where secular rulers (kings, dukes or lords) appointed church officials and bestowed upon them the symbols of their spiritual office (the ring and staff), which made the clergy beholden to secular rulers rather than the Pope.
Moderate reform emerged as the initial, pragmatic approach to these problems. Rather than attempting to strip secular rulers of all authority, “moderate reformers” sought to eliminate the worst abuses—specifically simony—while working in partnership with emperors and kings to enforce stricter moral discipline among the clergy.

(2) Describe the events that took place during the conflict between Pope Gregory VII and Henry IV. What was at stake?
The conflict between Pope Gregory VII and Holy Roman Emperor Henry IV was a watershed moment in European history, fundamentally changing the balance of power between Church and State. Gregory VII was a radical reformer who believed in the freedom of the church. He issued the Dictatus Papae (1075), which claimed the Pope had the authority to depose emperors.

(3) What was Christendom?
Christendom refers to the medieval concept of a unified, transnational community of Christian believers across Europe, governed by both a spiritual head (the Pope) and a secular leader.

Mark 13
² “Do you see all these great buildings?” replied Jesus. “Not one stone here will be left on another; every one will be thrown down.”

I thought it was interesting that Jesus decided to destroy all of the temple, as it had turned corrupt, and that he told the disciples that it would happen.