Sources need to be cited

1) The period roughly 1000 to 1500 C.E. saw the spread of Islam as a lasting religious, cultural, and political force in world history. Conforming to the guidelines above write a minimum 500-word essay addressing and discussing the following questions: Where specifically did Islam spread and how was it introduced to these new regions? Why was it successful?

2) Conforming to the guidelines above write a minimum 500-word essay in which you compare and contrast the history of the Eastern (Byzantine) half of the Roman Empire with that of the Western half.

3) The Middle Ages saw many conflicts between the nobility and the clergy in Europe. Conforming to the guidelines above write a minimum 500-word essay in which you address and discuss the following questions: Was the Investiture Controversy a political or religious conflict? Was the conflict a precedent for the modern doctrine of the separation of church and state?