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Christopher Columbus
In 1492, Christopher Columbus sailed the ocean blue. He discovered some Islands in the Caribbean and he discovered South America.
A concept that medieval England had was common law, which is the same that we share in the U.S government. Common law is one of the main pillars of the government.
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It was the "League of Nations" that was the international governmental organization that the United States declined to join after World War I, since most Americans thought this would entangle them in more European wars.
The supreme court requested that Richard Nixon hands over the tapes that he had. If they had them, they could then see what he's done and how corrupt he was so he decided to resign before being impeached. That's why he's not on the short list of presidents who were almost impeached, the other two being Clinton and Jackson, both of whom were acquitted of charges.