“The Impact of the Silk Road on Cultural Exchange and the Fall of the Roman Empire”

Please answer one of the essay questions.  (Atleast 250 words)
1.  What were the various impacts of the Silk Road on the cultures that did business along the Silk Roads?
2. How did the Roman Empire actually fall?
Berger, Eugene, Ph.D., et al. World History: Cultures, States, and Societies to 1500. https://alg.manifoldapp.org/projects/world-history
(Link to book)