Eastern Orthodoxy: Eastern Orthodoxy is another major religion that was practiced in Europe during the Renaissance. It is the official religion of Greece, Russia, and several other Eastern European countries. Eastern Orthodoxy is a monotheistic religion that is similar to Roman Catholicism, but there are some key differences between the two religions. Eastern Orthodox Christians do not believe in the supremacy of the Pope, and they do not accept the doctrine of purgatory. They also have different beliefs about the nature of the Holy Spirit and the role of Mary in salvation.
Protestantism: Protestantism is a third major religion that emerged in Europe during the Renaissance. It is based on the teachings of Martin Luther, John Calvin, and other reformers who challenged the authority of the Roman Catholic Church. Protestantism is a diverse religion that includes a variety of different denominations, such as Lutheranism, Calvinism, and Anglicanism. Protestants believe in the authority of the Bible as the sole source of religious truth, and they reject the idea of purgatory. They also believe that salvation is by faith alone, and they do not believe that good works are necessary for salvation.