Questions-
1. The Eastern Orthodox churches were part of the Eastern Schism, by which all churches in the Eastern part of the Mediterranean Sea area broke unity with the churches and bishops in the Western part of the Mediterranean Sea area and with the Pope in Rome.
2. Some Protestant Christians do not think that Catholics are Christians, because Catholics do not base what they believe and how they live on "Scripture alone," which is a basic Protestant principle. Instead, Catholic Christians believe that God's Revelation is found in Scripture and Tradition.
Additional information-
These questions related to Religious Studies. Check whether or not the statements are correct or incorrect. The first question is about Eastern orthodox churches breaking unity with western Churches and Pope in Rome. And the second question is about the protestants' belief about Catholics not being Christians.