Question

which of the following did mahatma gandhi call one of the few useful things ever invented

Answer 1

non violence
hope it helps

Answer 2

Mahatma Gandhi called Singer Stitching machine as one of the few useful things ever invented.

A sewing machine is used to stitch the fabric and different materials with the help of thread.

These machines were discovered at the time of 1st Industrial Revolution to reduce the rate of manual sewing performed in the clothing companies.