Back then, the answer would be A. But, if this was a MODERN question, the answer would be D.
Blitzkrieg was so fast that the enemy didn't have time to prepare, whereas in WW1 where they fought in trenches, they would have to cross no-mans land and the enemy could see them coming
D.. its when metal work was getting big and tools were an outcome.
Answer:
The stability that the Roman, Han, and Gupta Empires brought spurred trade in Asia on the Silk Roads. This greatly benefited all three empires and the areas in between. Wealth and ideas passed along the trade network providing the money and ideas necessary for Golden Ages.
Explanation:
Hope this helps you out!
