During world war i, which weapon was most likely to cause unintended deaths?

It depends.  It could be from artillery or from gas.  There are instances where coordinates were miscalculated and that resulted in the bombardment of their own soldiers.  Gas can be another weapon because once it is unleashed anyone can be affected if they don’t wear their gas mask.

lying without the limits of the several states; and may permit them, at such times, and in such manner as it

all

explanation: