Answer this ! i'll give a correct answer "brainliest award" nice point value too! which accurately describes historical events of the han dynasty? 1- during the han dynasty, chinese alchemists invented gunpowder for use in artillery cannons. 2- during the han dynasty, trade prospered across asia, europe, and africa because of the silk road. 3- during the han dynasty, emperor qin shi huang began building the great wall of china. 4- during the han dynasty, historians believe the i ching, a fortune-telling guide, was written.