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
Slaves were only used because Indian populations were destroyed.
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Marbury v. Madison, 5 U.S. (1 Cranch) 137 (1803), was a U.S. Supreme Court case that established the principle of judicial review in the United States, meaning that American courts have the power to strike down laws, statutes, and some government actions that contravene the U.S. Constitution.