Germany was unhappy because it lost WWI, and lost land and priveledges due to Treaty of Versailles. Italy was unhappy because they joined the Allies in WWI at the last minute, hoping to gain land after winning the war.
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.
They began using harsh discipline, so that citizens would be less swayed to commit illegal crimes
You could invest in a company if u made one or make a job