Answer: the use of debit cards without money in the account
Explanation:
It helped a lot with travel and trading was easy
Answer:
Both were strong at their peaks, but seeing how the vikings were much more used to the sea life and raiding, and how the peak of roman military was extremely focused on conquests, i would say the romans would beat them. But in a water battle, vikings probably take the cake.
hope it helps you
I think it might be option A
Would help if there was a picture