Direct democracy would be extremely costly because people would have to vote on every single thing and this would cost time and money to ensure everyone has voted. It couldn't be resolved in early times, but maybe with the age of technology, you could surpass that by having everyone vote online or something similar.
Explanation:
he wrote an accountfirst published in 1542asthe account and commentaries later retitled to shipwrecks and commentaries
Not entirely sure what you mean by this unless you mean specific interpretations of the constitution, which is considered judicial review which was established in Marbury v Madison, also known as an informal amendment.
Savage acts can be committed by an advanced society regardless of time period.