Question

when did crakers was invented​

Answer 1

This is much before the Chinese invented gunpowder, and firecrackers made their way into India in the 13th century.

Answer 2

Tradition tells of how Tom Smith (1823–1869) of London invented crackers in 1847. He created the crackers as a development of his bon-bon sweets, which he sold in a twist of paper (the origins of the traditional sweet-wrapper).