What happened to the Roman Empire after Constantine’s death?

The empire collapsed and was overrun by invaders.
The empire remained as-is for one hundred years.
The empire stabilized and went on to flourish.
The empire split, and the west fell into decline.

Question

What happened to the Roman Empire after Constantine’s death?

The empire collapsed and was overrun by invaders.
The empire remained as-is for one hundred years.
The empire stabilized and went on to flourish.
The empire split, and the west fell into decline.

anonymous · Answer

Two important things happened to the Roman Empire after the death of Constantine. First, it became more Christian and less tolerant, not only persecuting pagans and Jews, but eventually destroying all books that did not further the cause of Christianity. Second, the empire went into serious decline, until the Western Empire ceased even to exist after 476 CE.

anonymous · Answer

so it would be A right?