Ida Tarbell, a journalist who authored the book The History of Standard Oil exposed that Standard Oil has violated the Sherman Anti-trust Act(competition law) which led to Rockefeller Oil company break-up. According to her investigative journalism, Rockefeller has been practicing illegal, unfair and immoral business strategies.
All of these options except the establishment of the Post Office and the creation of the Great Seal are not legacies of the Articles of Confederation, since all of the other innovations in the United States took place after the Articles were replaced with the Constitution.
According to my notes, after 300 years of Hans no government they had many wars and suffering. Eventually the sui dynasty took over.