Hamilton meant that judges should be free from polotics so that they can interpret the law and cases in their own perspective, without judgement and/or pressure from anyone else.
The use of atomic bomb on Nagasaki and Hiroshima prevented the massive invasion into Japan that was scheduled for the fall of 1945. The United States has dropped two nuclear bombs on Nagasaki (August 6, 1945) and Hiroshima (August 9, 1945) after getting the consent of United Kingdom (as required and agreed upon in Quebec Agreement).
The modern development of today's world would have first made the routes safer. Today we have the safety of common things such as police officers, hospitals, e.t.c. Transportation of goods would have been easier, and it would have been easier to carry larger amounts of goods at one time.
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An oligarchy describes C. "rule by a small group". The size of this group can vary greatly but it relative to the size of the population its controlling and usually results and unfair governance.