As trainee pastor's, how did early Christian communities contribute to the development of the Canon? Please in simple English?

Early Christian communities played a significant role in the development of the Canon, which is the collection of sacred texts that make up the Bible. These communities were responsible for preserving and passing down the teachings and writings of the apostles and other early Christian leaders. They carefully selected which texts were considered inspired and authoritative, and which were not. Through their discussions, debates, and decisions, they helped to establish the boundaries of the Canon and determine which books would be included in the Bible. Their efforts ensured that the teachings of Jesus and the early church were accurately preserved and passed down to future generations.