Simplify the following text for a Grade 11 native English-speaking person.
Original: Historically significant as the first effort to attain consensus in the church through an assembly representing all of Christendom , the Council was the first occasion where the technical aspects of Christology were discussed .
Simplified: The Council of Nicaea was historically significant because it was the first effort to come to a consensus in the church through an assembly representing all of Christendom . `` It was the first occasion for the development of technical Christology . ''