Columbus's voyage was about the acquisition of spices and gold. When starting his voyage he had planned to sail to India so he could get both spices and gold. He mistakes the new world(America) for India and named the natives Indians. We all should be thankful to Columbus because we might not have been here today in America if he wouldn't have found it :).
The United States Supreme Court case that resulted in a unanimous decision against President Richard Nixon, ordering him to deliver tape recordings and other materials to the court
It impacted politics in the mid-19th century because of the large inflows of immigrants after 1845 from cultures that were different from the existing American culture.