Final answer:
The mission of the Church at the beginning of the 20th century was primarily focused on theological debates and doctrinal purity. However, there were also other important aspects of the Church's mission during this time, including the social gospel movement and expansion through missionary work.
Step-by-step explanation:
The mission of the Church at the beginning of the 20th century was primarily focused on theological debates and doctrinal purity. However, there were also other important aspects of the Church's mission during this time. One of these was the emergence of the social gospel movement, which sought to apply Christian ethics to society and address major social problems like poverty and injustice. Additionally, the Church was also involved in expansion and missionary work in new territories, both domestically and internationally.