Um i’m not sure i just answered for the points
Peaceful relations with neighboring American Indian groups and fertile farmland helped Penn's experiment become a success. Philadelphia grew into one of the most important cities in colonial America, becoming the birthplace of the U.S. Constitution.
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
The germans attack poland in 1939.