What factors contributed to the growth of trade along the silk road?

The factors that contributed of leading the growth of the silk road are the following;

·         Chinese silk – this silk is described to be more clear that has symmetrical colors and in the same time, it is known for its soft and glossy appearance

·         Rome empire – this is the empire that is considered to be most extensive when in terms of structure such as political and social

·         Han empire – this is an imperial dynasty in the place of china which was the second

number 4. should be the correct answer