What is "comes about"

Usage examples of "comes about".

Because when we see how any thing comes about, upon what causes, and by what manner.

Little things lead to great, men say, but here great things lead to little, for because of these tidings it comes about that I, Thomas Wingfield, of the Lodge and the parish of Ditchingham in the county of Norfolk, being now of a great age and having only a short time to live, turn to pen and ink.

So it comes about that, strictly on behalf of my paper, I inquire what your recreations are.

I have devoted most of my life to the law, and so it comes about that my sincerest hope in this situation is to be of help to this body in framing and adopting a constitution for the planet of Zarathustra.