The theory is called mercantilism.
The Great Compromise solved the problem of representation because it included both equal representation and proportional representation. The large states got the House which was proportional representation and the small states got the Senate which was equal representation.
Horace Mann was an educational reformer who lived in the US in the 19th century. He was a first to advocate a system of a public schools and public education as he believed that everyone had a right to education and that it should be free, democratic and have a professionally trained educators who would provide a quality education.
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United States presidential election of 1972, American presidential election held on November 7, 1972, in which Republican Pres. Richard Nixon was elected to a second term, defeating Democrat George McGovern in one of the largest landslides in U.S. history.
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sorry I could only answer 1 :(