The Cuban Missile Crisis was when USSR built missile bases in Cuba. This was a threat to the U.S. because the missiles could reach many major cities within the U.S.
Due to this threat, the United States wanted the missiles removed.
The correct answer is option D " …in a changing world worthy institutions can be conserved only by adjusting them to the changing time". Calvin Coolidge was the 30th president of the United States, a republican lawyer that had a successful political life. His philosophy against active government was that institution should change with the government in order to stay active and productive to the society.
Tang Code, The Tang Code is, however, the earliest Chinese legal code that we have in its complete form. The Tang Code served as a model for all subsequent dynastic codes of law, including those of the Song, Ming, and Qing dynasties.
It was a United States foreign policy document. It stated that if European nations tried to colonize land or interfere with states in north or South America it would be seen as acts of aggression which then required us intervention