Until they meet all unions are mere accidents which have no meaning.

The merest accident might have altered the whole course of later events.

Its development is therefore regarded, by some, as a mere accident of war.

Is this world and our presence therein all a mere accident?

Suddenly, he also realized that this state of affairs had not come about through mere accident.

They had come upon the outlaws by mere accident, and it is hard telling which was the most surprised.

Could it be coincidence, a mere accident of geography and history?

It is perhaps mere accident that we hear nothing of the Clementines from 330 until 360.

And no mere accident had brought the flower to her doorstep.

After her attack, the fire couldn't be a mere accident.