The rule against hearsay and the confrontation clause of the sixth amendment deal with similar problems.
I hope this helps a lot.
The answer would be C., Suversive activity.
Subversive activity refers to all willful acts that have the intention of being detrimental to governmental interests that don't really fall into the specific categories of; treason, sedition, sabotage... etc
Roosevelt and most Americans considered the Pearl Harbor attack to be a dirty trick, because it occurred while the Japanese ambassador was talking with the US about keeping peace in-between the two nations.
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Answer:It was because the freedom riders challenged the non-enforcement of the U.S Supreme Court decisions that ruled that segregated public buses were unconstitutional.
Explanation:
Both Native Americans and European colonist had negative impacts which would be the new diseases and sicknesses, which their bodies weren't immune to or ever known to have. Both They also benefited positively in a sense that both obtained great technological transfer along with new types of plants, and animals.