Answer:
The Three causes of the Great Schism in Christianity are:
1. Dispute over the use of images in the church.
2. The addition of the Latin word Filioque to the Nicene Creed.
3. Dispute about who is the leader or head of the church.
she doesn't care about other's feelings
This can be proven from her action after telling nick that tom has a woman in new York. as soon as Tom and Daisy appear, she make a rude remark with "tense gaiety," addressed toward daisy. This indicates that she doesn't really care about other's feelings.