Why did people stop writing Gospels or Biblical history to add to the Bible?

Although I'm not a Bible Scholar, it's my understanding that, for Christians, God's revelation ended with the death and resurrection of Christ. The Gospel of John states, "How long are you going to keep us in suspense? If you are the Messiah, tell us plainly."

Jesus answered them, "I told you and you do not believe. The works I do in my Father's name testify to me. But you do not believe, because you are not among my sheep.My sheep hear my voice; I know them, and they follow me.

Christ's followers hear the teachings Jesus offered and need no more divine instruction. The Acts of the Apostles, the Letters of Paul, and Revelations are often spoken of as the continued documenting of Christ's words and teachings, not as new revelation. Students of the Bible (like myself) read the Word of God and about the Word of God... but we expect no new public revelation - this is at least what I'vve learned.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.