How did Mahatma Gandhi use khadi as a national symbol?

(i) The most familiar image of Mahatma Gandhi is of him seated bare chested and in a short dhoti, by the spinning wheel.
(ii) He made spinning on the charkha and the daily use of khadi or coarse cloth made from homespun yarn, very powerful symbols.
(iii) They were not only symbols of self-reliance but also of resistance towards the use of British
mill-made cloth.