The best response is:
Geography influenced the language, politics, and power centers of both the Eastern and Western Church.
This response reflects the complexities of the East-West Schism by acknowledging how geographic factors such as location led to different languages used in religious services, distinct political relationships (papal supremacy in the West and caesaropapism in the East), and the establishment of different religious centers, ultimately contributing to the cultural and theological divisions that characterized the schism.