It depends on how one looks at Columbus, in some terms he was a hero for finding Spain more land & cultivating it in a way. He was also a Villian for the way he treated American natives.
The purpose was to get the British to repeal those acts.
President Nixon claimed executive privilege
that he had the right to protect the privacy of conversations, which led to a
constitutional conflict over taping phone
conversations, presidential powers and special prosecutors. President Nixon was
responsible of the domestic policy which describe as the establishment of the
Environmental Protection Agency.
It was the battle of the bulge.