Answer:
Martin Luther:
He was a German monk/priest who forever changed Christianity when he nailed his '95 Theses' to a church door in 1517.
He impacted the Reformation by being responsible for fractionalizing the Catholic Church.
John Calvin:
He was a theologian and ecclesiastical statesman leading French Protestant reformer.
He impacted the Reformation by stressing the doctrine of predestination, and his interpretations of Christian teachings.
Pope Leo X:
He was head of the Catholic Church and ruler of the Papal States from 9 March 1513 to his death in 1521.
He impacted the Reformation by failing to take the developing Reformation seriously, therfore contributing to the dissolution of the Western church.
Henry VIII:
He was the king of England who presided over the beginnings of the English Renaissance and the English Reformation.
He impacted the Reformation by declaring that he, not the Pope, was the head of the Church in England.
Step-by-step explanation: